RPC durability execution plan

task_id: ses_379f40c4cffeycUh0PJVxlE5gg (for resuming to continue this task if needed)

<task_result>
## Repository Analysis Complete

### 1) File Existence Status

#### ✅ All Requested Files Exist:

| File Path | Status |
|-----------|--------|
| `packages/opencode/src/share/rpc-contract.ts` | ✅ EXISTS |
| `packages/cloudsession/src/rpc-contract.ts` | ✅ EXISTS |
| `packages/cloudsession/src/types.ts` | ✅ EXISTS |
| `packages/cloudsession/src/rpc.ts` | ✅ EXISTS |
| `packages/opencode/src/share/share.sql.ts` | ✅ EXISTS |
| `packages/opencode/src/storage/schema.ts` | ✅ EXISTS |
| `packages/opencode/src/share/share-next.ts` | ✅ EXISTS |

#### ✅ Test Directories:

| Directory | Status | Notes |
|-----------|--------|-------|
| `packages/opencode/test/` | ✅ EXISTS | Contains `test/preload.ts` |
| `packages/cloudsession/src/*.test.ts` | ✅ EXISTS | Tests co-located in `src/` directory with `src/preload.ts` |

### 2) Naming/Path Mismatches

**No critical mismatches found**, but note structural differences:

1. **Test Directory Structure:**
   - `packages/opencode/` uses `test/` directory
   - `packages/cloudsession/` keeps tests in `src/` directory (co-located with source)

2. **TypeScript Command Mismatch:**
   - Direct `tsc --noEmit` fails in cloudsession due to wrangler type generation requirement
   - Use npm script `typecheck` instead: `bun run typecheck`

3. **RPC Contract Duplication:**
   - Both packages have identical `rpc-contract.ts` files
   - This is intentional for contract sharing across packages

### 3) Dependency Ordering Risks

#### 🔴 High Priority Risks:

1. **cloudsession Typecheck Dependency:**
   - **Issue:** `bun tsc --noEmit` fails with `Cannot find type definition file for './worker-configuration'`
   - **Cause:** Wrangler types must be generated first via `wrangler types`
   - **Mitigation:** Use `bun run typecheck` script which runs `wrangler types && tsc --noEmit`

2. **Schema Migration Order:**
   - `packages/opencode/src/share/share.sql.ts` im...

<path>/home/jm/data/code/opencode-trees/fr-capnweb-persistence/.opencode/context/project</path>
<type>directory</type>
<entries>


(0 entries)
</entries>

2026-02-22T15:52:57+00:00

<path>/home/jm/data/code/opencode-trees/fr-capnweb-persistence/.opencode/context/project/project-plan.md</path>
<type>file</type>
<content>1: # Durable Share Replay Prototype - Executable Plan
2: 
3: Status: `ready`
4: Default dedupe strategy: `bounded recent-op window` (selected for v1)
5: 
6: ## Execution Loop (run after every step)
7: 1. `analyzer` validates current step outputs and reports blockers, drift, and dependency impact.
8: 2. Project lead updates the next step scope (tighten/expand tests, reorder if needed).
9: 3. Only proceed when verification gates pass, or when an approved fallback path is documented.
10: 
11: ## Dependency Graph
12: - Parallel start: Step 1 + test scaffolding for Steps 3/4/8/9
13: - Then: Steps 2 -> 3 -> 4
14: - In parallel after Step 1: Step 5
15: - Then: Steps 6 -> 7 (depends on Steps 4 and 5)
16: - Final hardening: Steps 8 -> 9 -> 10
17: 
18: ## Step Plan
19: 
20: - [ ] **Step 1 - RPC durability contract (no behavior change)**
21:   - Research (`analyzer`): inspect both contract files and existing `ShareRpc` signatures.
22:   - Code (`coder-agent`): add durable envelope (`op_id`, `batch_id`, `seq`, `depends_on`, `expected_cursor`, `capability_epoch`) and ack (`cursor`, `applied`, `duplicates`, `rejected`) to both contract files; add RPC methods `redeemShare`, `appendOps`, `revokeCapability`.
23:   - Verify (`coder-agent`): run `bun --cwd packages/cloudsession run typecheck` and `bun --cwd packages/opencode run typecheck`.
24:   - Re-evaluate (`analyzer`): confirm no behavior changes and contract parity across both packages.
25: 
26: - [ ] **Step 2 - Cloudsession state model for durable replay**
27:   - Research (`analyzer`): map metadata read/write paths and REST compatibility points.
28:   - Code (`coder-agent`): extend `packages/cloudsession/src/types.ts` metadata with `cursor`, `capabilityEpoch`, bounded `applied_recent`; default missing fields on read for old records.
29:   - Verify (`coder-agent`): run `bun --cwd packages/cl...

<path>/home/jm/data/code/opencode-trees/fr-capnweb-persistence/.opencode/context/project/project-metrics.md</path>
<type>file</type>
<content>1: # Project Metrics
2: 
3: - 2026-02-22T15:52:57+00:00 | task: convert durability plan to executable subagent workflow | agent: project-lead | status: completed
4: 

(End of file - total 4 lines)
</content>

task_id: ses_379ee8fb4ffe7suHdrcFeCE7Pf (for resuming to continue this task if needed)

<task_result>
Based on the project plan found, I'll create the reusable execution checklist and instantiate it for Step 1.

---

## Reusable Per-Step Execution Checklist

### Phase 1: Context & Dependency Validation
- **Context Refresh**: Read current project-plan.md and project-metrics.md; verify step status matches expectations
- **Dependency Check**: Identify upstream steps required for current step; confirm all dependent steps have verification gates marked "pass"
- **Scoped Analysis**: Delegate to `analyzer` to inspect affected files, report blockers, drift risks, and impact on downstream steps

### Phase 2: Implementation & Verification
- **Implementation Delegation**: Assign work to `coder-agent` with exact file paths, function signatures, and acceptance criteria; provide step-specific research findings from analysis phase
- **Verification**: Run step-specific verification commands; capture pass/fail status; document any flakes or warnings

### Phase 3: Review & Commit
- **Re-evaluate Downstream Plan**: Delegate to `analyzer` to confirm step completion doesn't invalidate subsequent steps; adjust scope/tests in project-plan.md if needed
- **Plan Update**: Mark current step checkbox as complete in project-plan.md; update dependency graph if sequencing changed
- **Metrics Logging**: Append completion timestamp, agent assignments, verification results to project-metrics.md
- **Git Commit Requirements**: Create commit with format `[DURABILITY] Step <N>: <brief>`; include verification output in commit body; push only when all gates pass

---

## Step 1 Instantiation: RPC Durability Contract

### Phase 1: Context & Dependency Validation
- **Context Refresh**: Read `.opencode/context/project/project-plan.md`; verify Step 1 checkbox is unchecked; note parallel start with test scaffolding for Steps 3/4/8/9
- **Dependency Check**: No upstream dependencies required (parallel start ste...

task_id: ses_379edd156ffeutA0Swy86TFm2Z (for resuming to continue this task if needed)

<task_result>
## DURABILITY CONTRACT - SCOPED ANALYSIS REPORT

---

### 1. CONTRACT FILES (IDENTICAL)

Both files are **identical** at 47 lines:

**File:**
- `packages/opencode/src/share/rpc-contract.ts`
- `packages/cloudsession/src/rpc-contract.ts`

**Current Types:**
```typescript
// Line 4-24: SyncData discriminated union
export type SyncData =
  | { type: "session"; data: SDK.Session }
  | { type: "message"; data: SDK.Message }
  | { type: "part"; data: SDK.Part }
  | { type: "session_diff"; data: SDK.FileDiff[] }
  | { type: "model"; data: SDK.Model[] }

// Line 26-30: Share creation response
export type SyncInfo = {
  id: string
  url: string
  secret: string
}

// Line 32-39: Probe types (for RPC testing)
export type ProbeValueInput = { when: Date; bytes: Uint8Array; nested: { x: number } }
export type ProbeValueOutput = { when: string; bytes: number[]; size: number; nested: { x: number } }
export type ProbeCallback = (msg: string) => string | Promise<string>
```

**Current ShareRpc Interface (Line 41-46):**
```typescript
export interface ShareRpc extends RpcTarget {
  createShare: (sessionID: string) => Promise<SyncInfo>
  syncShare: (shareID: string, secret: string, data: SyncData[]) => Promise<{ success: boolean; syncCount: number }>
  probeValue: (input: ProbeValueInput) => ProbeValueOutput
  probeCallback: (cb: ProbeCallback) => Promise<string>
}
```

---

### 2. FILES IMPORTING CONTRACTS (WILL TYPE-BREAK)

**File: `packages/opencode/src/share/share-next.ts`**
- **Line 12:** `import type { ShareRpc, SyncData, SyncInfo } from "./rpc-contract"`
- **Usage:**
  - Line 83-87: `newHttpBatchRpcSession<ShareRpc>(...).createShare(sessionID)`
  - Line 145-149: `newHttpBatchRpcSession<ShareRpc>(...).syncShare(share.id, share.secret, data)`
- **Impact:** ✅ SAFE - Current methods unchanged, new methods are additive

**File: `packages/cloudsession/src/rpc.ts`**
- **Line 4:** `impor...

task_id: ses_379ecf8f1ffeRjqWRdKKFzpXO7 (for resuming to continue this task if needed)

<task_result>

</task_result>

task_id: ses_379ecf8f1ffeRjqWRdKKFzpXO7 (for resuming to continue this task if needed)

<task_result>
 ## Completion Report

### Goal A: Standard Per-Step Operating Procedure
Added to `.opencode/context/project/project-plan.md` with a 10-point checklist:
1. Context refresh
2. Dependency check
3. Scoped analysis
4. Implementation delegation
5. Verification
6. Downstream re-evaluation
7. Plan check-off
8. Metrics log entry
9. Optional escalation for blockers
10. Readiness decision for next step

### Goal B: Step 1 Implementation

**Modified files (identical changes in both):**
- `packages/opencode/src/share/rpc-contract.ts`
- `packages/cloudsession/src/rpc-contract.ts`

**Added types:**
- `DurableOp` - operation envelope with `op_id`, `batch_id`, `seq`, `depends_on`, `expected_cursor`, `capability_epoch`, `payload`
- `OpAck` - acknowledgment with `cursor`, `applied`, `duplicates`, `rejected`
- `ShareRedemption` - share metadata with `share_id`, `cursor`, `capability_epoch`, `created_at`, `session_id`

**Added ShareRpc methods (contract only):**
- `redeemShare(shareID, secret) => Promise<ShareRedemption>`
- `appendOps(shareID, secret, capabilityEpoch, ops) => Promise<OpAck>`
- `revokeCapability(shareID, secret, newEpoch) => Promise<{ success: boolean; new_epoch: number }>`

### Verification Results

| Package | Status | Output |
|---------|--------|--------|
| `packages/opencode` | ✅ PASS | `tsgo --noEmit` completed successfully |
| `packages/cloudsession` | ⚠️ BLOCKED | Pre-existing environment issue - `worker-configuration.d.ts` type definition file missing |

The cloudsession typecheck failure is a **pre-existing blocker** unrelated to this change. The error occurs because `wrangler types` generates `worker-configuration.d.ts` which is gitignored but referenced by tsconfig. The contract file changes are syntactically correct and type-compatible.

### Plan Updates
- Step 1 marked complete `[x]` in `project-plan.md`
- Metrics line appended to `project-metrics.md`

**F...

Usage: bun run [flags] <file or script>

Flags:
      --silent                        Don't print the script command
      --elide-lines=<val>             Number of lines of script output shown when using --filter (default: 10). Set to 0 to show all lines.
  -F, --filter=<val>                  Run a script in all workspace packages matching the pattern
  -b, --bun                           Force a script or package to use Bun's runtime instead of Node.js (via symlinking node)
      --shell=<val>                   Control the shell used for package.json scripts. Supports either 'bun' or 'system'
      --workspaces                    Run a script in all workspace packages (from the "workspaces" field in package.json)
      --parallel                      Run multiple scripts concurrently with Foreman-style output
      --sequential                    Run multiple scripts sequentially with Foreman-style output
      --no-exit-on-error              Continue running other scripts when one fails (with --parallel/--sequential)
      --watch                         Automatically restart the process on file change
      --hot                           Enable auto reload in the Bun runtime, test runner, or bundler
      --no-clear-screen               Disable clearing the terminal screen on reload when --hot or --watch is enabled
      --smol                          Use less memory, but run garbage collection more often
  -r, --preload=<val>                 Import a module before other modules are loaded
      --require=<val>                 Alias of --preload, for Node.js compatibility
      --import=<val>                  Alias of --preload, for Node.js compatibility
      --inspect=<val>                 Activate Bun's debugger
      --inspect-wait=<val>            Activate Bun's debugger, wait for a connection before executing
      --inspect-brk=<val>             Activate Bun's debugger, set breakpoint on first line of code and wait
      --cpu-prof                      ...

Usage: bun run [flags] <file or script>

Flags:
      --silent                        Don't print the script command
      --elide-lines=<val>             Number of lines of script output shown when using --filter (default: 10). Set to 0 to show all lines.
  -F, --filter=<val>                  Run a script in all workspace packages matching the pattern
  -b, --bun                           Force a script or package to use Bun's runtime instead of Node.js (via symlinking node)
      --shell=<val>                   Control the shell used for package.json scripts. Supports either 'bun' or 'system'
      --workspaces                    Run a script in all workspace packages (from the "workspaces" field in package.json)
      --parallel                      Run multiple scripts concurrently with Foreman-style output
      --sequential                    Run multiple scripts sequentially with Foreman-style output
      --no-exit-on-error              Continue running other scripts when one fails (with --parallel/--sequential)
      --watch                         Automatically restart the process on file change
      --hot                           Enable auto reload in the Bun runtime, test runner, or bundler
      --no-clear-screen               Disable clearing the terminal screen on reload when --hot or --watch is enabled
      --smol                          Use less memory, but run garbage collection more often
  -r, --preload=<val>                 Import a module before other modules are loaded
      --require=<val>                 Alias of --preload, for Node.js compatibility
      --import=<val>                  Alias of --preload, for Node.js compatibility
      --inspect=<val>                 Activate Bun's debugger
      --inspect-wait=<val>            Activate Bun's debugger, wait for a connection before executing
      --inspect-brk=<val>             Activate Bun's debugger, set breakpoint on first line of code and wait
      --cpu-prof                      ...

$ tsgo --noEmit

$ wrangler types && tsc --noEmit

▄
[38;5;m█[38;5;m▀[38;5;m▀[38;5;m█ [38;5;m█[38;5;m▀[38;5;m▀[38;5;m█ [38;5;m█[38;5;m▀[38;5;m▀[38;5;m█ [38;5;m█[38;5;m▀[38;5;m▀[38;5;m▄ █▀▀▀ █▀▀█ █▀▀█ █▀▀█
[38;5;m█  [38;5;m█ [38;5;m█  [38;5;m█ [38;5;m█[38;5;m▀[38;5;m▀[38;5;m▀ [38;5;m█  [38;5;m█ █    █  █ █  █ █▀▀▀
[38;5;m▀[38;5;m▀[38;5;m▀[38;5;m▀ [38;5;m█[38;5;m▀[38;5;m▀[38;5;m▀ [38;5;m▀[38;5;m▀[38;5;m▀[38;5;m▀ [38;5;m▀▀▀[38;5;m▀ ▀▀▀▀ ▀▀▀▀ ▀▀▀▀ ▀▀▀▀

Commands:
  opencode completion          generate shell completion script
  opencode acp                 start ACP (Agent Client Protocol) server
  opencode mcp                 manage MCP (Model Context Protocol) servers
  opencode [project]           start opencode tui                                          [default]
  opencode attach <url>        attach to a running opencode server
  opencode run [message..]     run opencode with a message
  opencode debug               debugging and troubleshooting tools
  opencode auth                manage credentials
  opencode agent               manage agents
  opencode upgrade [target]    upgrade opencode to the latest or a specific version
  ...

<path>/home/jm/data/code/opencode-trees/fr-capnweb-persistence/packages/opencode/src/share/rpc-contract.ts</path>
<type>file</type>
<content>1: import type { RpcTarget } from "capnweb"
2: import type * as SDK from "@opencode-ai/sdk/v2"
3: 
4: // Durable operation envelope for idempotent replay
5: export type DurableOp = {
6:   op_id: string
7:   batch_id: string
8:   seq: number
9:   depends_on?: string
10:   expected_cursor: number
11:   capability_epoch: number
12:   payload: unknown
13: }
14: 
15: // Acknowledgment for batch apply results
16: export type OpAck = {
17:   cursor: number
18:   applied: string[]
19:   duplicates: string[]
20:   rejected: { op_id: string; reason: string }[]
21: }
22: 
23: // Share metadata returned on redemption
24: export type ShareRedemption = {
25:   share_id: string
26:   cursor: number
27:   capability_epoch: number
28:   created_at: string
29:   session_id: string
30: }
31: 
32: export type SyncData =
33:   | {
34:       type: "session"
35:       data: SDK.Session
36:     }
37:   | {
38:       type: "message"
39:       data: SDK.Message
40:     }
41:   | {
42:       type: "part"
43:       data: SDK.Part
44:     }
45:   | {
46:       type: "session_diff"
47:       data: SDK.FileDiff[]
48:     }
49:   | {
50:       type: "model"
51:       data: SDK.Model[]
52:     }
53: 
54: export type SyncInfo = {
55:   id: string
56:   url: string
57:   secret: string
58: }
59: 
60: export type ProbeValueInput = { when: Date; bytes: Uint8Array; nested: { x: number } }
61: export type ProbeValueOutput = {
62:   when: string
63:   bytes: number[]
64:   size: number
65:   nested: { x: number }
66: }
67: export type ProbeCallback = (msg: string) => string | Promise<string>
68: 
69: export interface ShareRpc extends RpcTarget {
70:   createShare: (sessionID: string) => Promise<SyncInfo>
71:   syncShare: (shareID: string, secret: string, data: SyncData[]) => Promise<{ success: boolean; syncCount: number }>
72:   probeValue: (input: ProbeValueInput) =...

<path>/home/jm/data/code/opencode-trees/fr-capnweb-persistence/packages/cloudsession/src/rpc-contract.ts</path>
<type>file</type>
<content>1: import type { RpcTarget } from "capnweb"
2: import type * as SDK from "@opencode-ai/sdk/v2"
3: 
4: // Durable operation envelope for idempotent replay
5: export type DurableOp = {
6:   op_id: string
7:   batch_id: string
8:   seq: number
9:   depends_on?: string
10:   expected_cursor: number
11:   capability_epoch: number
12:   payload: unknown
13: }
14: 
15: // Acknowledgment for batch apply results
16: export type OpAck = {
17:   cursor: number
18:   applied: string[]
19:   duplicates: string[]
20:   rejected: { op_id: string; reason: string }[]
21: }
22: 
23: // Share metadata returned on redemption
24: export type ShareRedemption = {
25:   share_id: string
26:   cursor: number
27:   capability_epoch: number
28:   created_at: string
29:   session_id: string
30: }
31: 
32: export type SyncData =
33:   | {
34:       type: "session"
35:       data: SDK.Session
36:     }
37:   | {
38:       type: "message"
39:       data: SDK.Message
40:     }
41:   | {
42:       type: "part"
43:       data: SDK.Part
44:     }
45:   | {
46:       type: "session_diff"
47:       data: SDK.FileDiff[]
48:     }
49:   | {
50:       type: "model"
51:       data: SDK.Model[]
52:     }
53: 
54: export type SyncInfo = {
55:   id: string
56:   url: string
57:   secret: string
58: }
59: 
60: export type ProbeValueInput = { when: Date; bytes: Uint8Array; nested: { x: number } }
61: export type ProbeValueOutput = {
62:   when: string
63:   bytes: number[]
64:   size: number
65:   nested: { x: number }
66: }
67: export type ProbeCallback = (msg: string) => string | Promise<string>
68: 
69: export interface ShareRpc extends RpcTarget {
70:   createShare: (sessionID: string) => Promise<SyncInfo>
71:   syncShare: (shareID: string, secret: string, data: SyncData[]) => Promise<{ success: boolean; syncCount: number }>
72:   probeValue: (input: ProbeValueInput) => ...

<path>/home/jm/data/code/opencode-trees/fr-capnweb-persistence/.opencode/context/project/project-plan.md</path>
<type>file</type>
<content>1: # Durable Share Replay Prototype - Executable Plan
2: 
3: Status: `ready`
4: Default dedupe strategy: `bounded recent-op window` (selected for v1)
5: 
6: ## Standard Per-Step Operating Procedure
7: 
8: Every step must follow this 10-point checklist:
9: 
10: 1. **Context refresh** - Review the current plan state, prior step outcomes, and any blockers or drift notes.
11: 2. **Dependency check** - Verify all prerequisite steps are complete and no downstream impacts are at risk.
12: 3. **Scoped analysis** - Identify the minimal surface area for changes; document expected vs. out-of-scope work.
13: 4. **Implementation delegation** - Assign coding tasks to appropriate agents with clear boundaries.
14: 5. **Verification** - Run required tests, typechecks, and manual validation before marking complete.
15: 6. **Downstream re-evaluation** - Identify any impact on pending steps; update their scopes if needed.
16: 7. **Plan check-off** - Mark the step complete in this plan document.
17: 8. **Metrics log entry** - Append a line to `project-metrics.md` with timestamp, step, agents, and pass/fail.
18: 9. **Optional escalation** - If blockers emerge that exceed step scope, escalate to project-lead for reassignment or plan amendment.
19: 10. **Readiness decision** - Confirm next step can begin, or document why a pause/rework is required.
20: 
21: ## Execution Loop (run after every step)
22: 1. `analyzer` validates current step outputs and reports blockers, drift, and dependency impact.
23: 2. Project lead updates the next step scope (tighten/expand tests, reorder if needed).
24: 3. Only proceed when verification gates pass, or when an approved fallback path is documented.
25: 
26: ## Dependency Graph
27: - Parallel start: Step 1 + test scaffolding for Steps 3/4/8/9
28: - Then: Steps 2 -> 3 -> 4
29: - In parallel after Step 1: Step 5
30: - The...

<path>/home/jm/data/code/opencode-trees/fr-capnweb-persistence/.opencode/context/project/project-metrics.md</path>
<type>file</type>
<content>1: # Project Metrics
2: 
3: - 2026-02-22T15:52:57+00:00 | task: convert durability plan to executable subagent workflow | agent: project-lead | status: completed
4: - 2026-02-22T16:01:00+00:00 | step: 1 | agent: coder-agent | verification: opencode=pass, cloudsession=blocked | status: completed
5: 

(End of file - total 5 lines)
</content>

error TS2688: Cannot find type definition file for './worker-configuration'.
  The file is in the program because:
    Entry point of type library './worker-configuration' specified in compilerOptions
error: "tsc" exited with code 2

$ wrangler types

▄
[38;5;m█[38;5;m▀[38;5;m▀[38;5;m█ [38;5;m█[38;5;m▀[38;5;m▀[38;5;m█ [38;5;m█[38;5;m▀[38;5;m▀[38;5;m█ [38;5;m█[38;5;m▀[38;5;m▀[38;5;m▄ █▀▀▀ █▀▀█ █▀▀█ █▀▀█
[38;5;m█  [38;5;m█ [38;5;m█  [38;5;m█ [38;5;m█[38;5;m▀[38;5;m▀[38;5;m▀ [38;5;m█  [38;5;m█ █    █  █ █  █ █▀▀▀
[38;5;m▀[38;5;m▀[38;5;m▀[38;5;m▀ [38;5;m█[38;5;m▀[38;5;m▀[38;5;m▀ [38;5;m▀[38;5;m▀[38;5;m▀[38;5;m▀ [38;5;m▀▀▀[38;5;m▀ ▀▀▀▀ ▀▀▀▀ ▀▀▀▀ ▀▀▀▀

Commands:
  opencode completion          generate shell completion script
  opencode acp                 start ACP (Agent Client Protocol) server
  opencode mcp                 manage MCP (Model Context Protocol) servers
  opencode [project]           start opencode tui                                          [default]
  opencode attach <url>        attach to a running opencode server
  opencode run [message..]     run opencode with a message
  opencode debug               debugging and troubleshooting tools
  opencode auth                manage credentials
  opencode agent               manage agents
  opencode upgrade [target]    upgrade opencode to the latest or a specific version
  opencode uninsta...

task_id: ses_379e8fd9dffeAmv969bEgm4iwZ (for resuming to continue this task if needed)

<task_result>
Now let me compile the analysis based on all the findings.

## Step 1 Completion Evaluation

### 1. Parity Check Between RPC Contract Files

**Status: ✅ EXACT PARITY**

Comparing `packages/opencode/src/share/rpc-contract.ts` and `packages/cloudsession/src/rpc-contract.ts`:
- Both files are **identical** (84 lines each)
- Same type definitions: `DurableOp`, `OpAck`, `ShareRedemption`, `SyncData`, `SyncInfo`, `ProbeValueInput`, `ProbeValueOutput`, `ProbeCallback`
- Same `ShareRpc` interface with identical method signatures

The diff confirms both files received the exact same changes.

### 2. Added Fields and Methods - Step 1 Requirements

**Status: ✅ REQUIREMENTS EXACTLY MET**

Step 1 requires:
- Durable envelope: `op_id`, `batch_id`, `seq`, `depends_on`, `expected_cursor`, `capability_epoch`, `payload` ✅
- Ack type: `cursor`, `applied`, `duplicates`, `rejected` ✅
- RPC methods: `redeemShare`, `appendOps`, `revokeCapability` ✅

All fields match the plan specification exactly:
```typescript
export type DurableOp = {
  op_id: string
  batch_id: string
  seq: number
  depends_on?: string
  expected_cursor: number
  capability_epoch: number
  payload: unknown
}

export type OpAck = {
  cursor: number
  applied: string[]
  duplicates: string[]
  rejected: { op_id: string; reason: string }[]
}

export type ShareRedemption = {
  share_id: string
  cursor: number
  capability_epoch: number
  created_at: string
  session_id: string
}

redeemShare: (shareID: string, secret: string) => Promise<ShareRedemption>
appendOps: (shareID: string, secret: string, capabilityEpoch: number, ops: DurableOp[]) => Promise<OpAck>
revokeCapability: (
  shareID: string,
  secret: string,
  newEpoch: number,
) => Promise<{ success: boolean; new_epoch: number }>
```

### 3. Behavior/Runtime Code Changes

**Status: ✅ NO BEHAVIOR CHANGES**

Analysis confirms:
- Only `rpc-contract.ts` files modified ...

task_id: ses_37910e098ffemhIfl0faAHtexw (for resuming to continue this task if needed)

<task_result>
## Analysis: Adding Durable Replay State Fields

### 1. Exact Places to Add Fields

**`packages/cloudsession/src/types.ts` (lines 25-31)** - Add to `SessionMetadata`:
```typescript
export type SessionMetadata = {
  createdAt: number
  lastUpdated: number
  syncCount: number
  secret: string
  sessionID: string
  cursor?: string          // NEW: replay cursor position
  capabilityEpoch?: number  // NEW: capability version for epoch tracking
  applied_recent?: string[] // NEW: bounded dedupe ledger (max N recent IDs)
}
```

**`packages/cloudsession/src/index.tsx` (line 123-129)** - Add defaults in `initialSession` creation (POST /api/share):
```typescript
metadata: {
  createdAt: credentialsData.createdAt,
  lastUpdated: now,
  syncCount: 0,
  secret: shareSecret,
  sessionID: sessionID,
  cursor: "",
  capabilityEpoch: 0,
  applied_recent: [],
},
```

**`packages/cloudsession/src/index.tsx` (lines 190-195)** - Add defaults when reading existing session in sync endpoint:
```typescript
metadata: {
  ...agentSession.metadata,
  lastUpdated: now,
  syncCount: agentSession.metadata.syncCount + 1,
  cursor: agentSession.metadata.cursor ?? "",
  capabilityEpoch: agentSession.metadata.capabilityEpoch ?? 0,
  applied_recent: agentSession.metadata.applied_recent ?? [],
},
```

---

### 2. Backward Compatibility - Default Missing Fields

**Location:** `packages/cloudsession/src/index.tsx` line 190-195 (sync endpoint metadata update)

Use nullish coalescing (`??`) for all three new fields:
- `cursor` → default `""` (empty string)
- `capabilityEpoch` → default `0` (number)
- `applied_recent` → default `[]` (empty array)

This ensures:
- Old sessions (created before fields added) read successfully
- New sessions have the fields populated
- No breaking changes to existing R2 blobs

---

### 3. Test Expectations That May Break

**`packages/cloudsession/src/api.test.ts`**

Tests that...

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<task_result>

</task_result>

task_id: ses_379104d72ffevol6yIjdaYQgFm (for resuming to continue this task if needed)

<task_result>
 ## Step 2 Completion Report

### Status: ✅ Complete

### Changed Files
1. **`packages/cloudsession/src/types.ts`**
   - Extended `SessionMetadata` type with:
     - `cursor: number` - Position tracker for durable replay
     - `capabilityEpoch: number` - Capability revocation epoch
     - `appliedRecent: string[]` - Bounded dedupe ledger for recent operations
   - Added `DEFAULT_METADATA` constant for safe initialization of new records

2. **`packages/cloudsession/src/index.tsx`**
   - Updated session creation (`POST /api/share`) to initialize new metadata fields with defaults
   - Imported `DEFAULT_METADATA` for consistent initialization

3. **`packages/cloudsession/src/rpc.ts`**
   - Updated RPC `createShare` method to initialize new metadata fields with defaults
   - Imported `DEFAULT_METADATA` for consistent initialization

### REST Compatibility Strategy
- **Write path**: All new session creations include explicit default values for `cursor`, `capabilityEpoch`, and `appliedRecent`
- **Read path**: Existing legacy records stored without these fields will naturally receive `undefined`, which is acceptable for now. Future RPC methods (`redeemShare`, `appendOps`) will normalize defaults on read if needed.

### Verification Results
```
bun test --preload ./src/preload.ts src/api.test.ts src/index.test.ts

bun test v1.3.9 (cf6cdbbb)
 30 pass
 0 fail
 92 expect() calls
Ran 30 tests across 2 files. [137.00ms]
```

### Plan Updates Completed
1. ✅ Added Step 1 blocker note in `project-plan.md` regarding cloudsession typecheck infrastructure issue
2. ✅ Marked Step 2 as complete `[x]` in `project-plan.md`
3. ✅ Appended metrics line to `project-metrics.md`

### Next Steps
Step 2 is complete and ready for Step 3 implementation (`redeemShare` + epoch checks in RPC server).
</task_result>

<path>/home/jm/data/code/opencode-trees/fr-capnweb-persistence/packages/cloudsession/src/types.ts</path>
<type>file</type>
<content>1: /**
2:  * SDK Types for OpenCode Agent Sessions
3:  * Import core types from @opencode-ai/sdk/v2
4:  */
5: import type { Session, Message, Part, FileDiff, Model } from "@opencode-ai/sdk/v2"
6: 
7: // Re-export SDK types for convenience
8: export type { Session, Message, Part, FileDiff, Model }
9: 
10: /**
11:  * Sync data discriminated union type
12:  * Represents the different types of data that can be synchronized
13:  */
14: export type SyncData =
15:   | { type: "session"; data: Session }
16:   | { type: "message"; data: Message }
17:   | { type: "part"; data: Part }
18:   | { type: "session_diff"; data: FileDiff[] }
19:   | { type: "model"; data: Model[] }
20: 
21: /**
22:  * Complete agent session structure
23:  * This represents a fully reconstructed session from sync data
24:  */
25: export type SessionMetadata = {
26:   createdAt: number
27:   lastUpdated: number
28:   syncCount: number
29:   secret: string
30:   sessionID: string
31:   // Durable replay fields (initialized with defaults for backwards compatibility)
32:   cursor: number
33:   capabilityEpoch: number
34:   appliedRecent: string[]
35: }
36: 
37: /**
38:  * Default metadata values for durable replay fields.
39:  * Use when creating new sessions or normalizing legacy records.
40:  */
41: export const DEFAULT_METADATA = {
42:   cursor: 0,
43:   capabilityEpoch: 1,
44:   appliedRecent: [] as string[],
45: } as const
46: 
47: /**
48:  * Lightweight index entry stored at index/${shareID}
49:  * Used by list endpoints to avoid loading full session blobs
50:  */
51: export type SessionIndex = {
52:   id: string
53:   sessionID: string
54:   title: string
55:   directory: string
56:   messageCount: number
57:   partCount: number
58:   diffCount: number
59:   modelCount: number
60:   lastUpdated: number
61:   syncCount: number
62:   createdAt: number
63: }
64: 
65: expo...

<path>/home/jm/data/code/opencode-trees/fr-capnweb-persistence/packages/cloudsession/src/index.tsx</path>
<type>file</type>
<content>1: import { Hono } from "hono"
2: import { cors } from "hono/cors"
3: import { newWorkersRpcResponse } from "capnweb"
4: import { zValidator } from "@hono/zod-validator"
5: import { z } from "zod"
6: import { v5 as uuidv5 } from "uuid"
7: import type { SyncInfo, ShareCredentials, AgentSession, SessionIndex } from "./types.ts"
8: import { DEFAULT_METADATA } from "./types.ts"
9: import { createStorageAdapter, type StorageAdapter } from "./storage.ts"
10: import SessionList from "./views/session-list.tsx"
11: import SessionDetail from "./views/session-detail.tsx"
12: import NotFound from "./views/not-found.tsx"
13: import { ShareRpcImpl } from "./rpc.ts"
14: 
15: import type { SessionBroadcast as SessionBroadcastType } from "./broadcast.ts"
16: 
17: // Re-export Durable Object class (required by wrangler)
18: export { SessionBroadcast } from "./broadcast.ts"
19: 
20: /**
21:  * Environment bindings for Cloudflare Worker
22:  */
23: type Env = {
24:   SESSIONS_STORE: R2Bucket
25:   SESSIONS_SHARED_SECRET: string
26:   SESSIONS_RPC_SHARED_KEY?: string
27:   API_DOMAIN: string
28:   SESSIONS_BROADCAST: DurableObjectNamespace<SessionBroadcastType>
29: }
30: 
31: function isAuthorizedRpcRequest(c: { req: { header: (name: string) => string | undefined }; env: Env }) {
32:   const configured = c.env.SESSIONS_RPC_SHARED_KEY
33:   if (!configured) return true
34:   const received = c.req.header("x-opencode-share-key")
35:   return received === configured
36: }
37: 
38: /**
39:  * Main Hono application
40:  */
41: const app = new Hono<{ Bindings: Env }>()
42: 
43: // Enable CORS for API routes only (not for WebSocket or HTML routes)
44: app.use("/api/*", cors())
45: 
46: app.all("/rpc/share", async (c) => {
47:   if (!isAuthorizedRpcRequest(c)) {
48:     return c.json({ error: "Unauthorized" }, 401)
49:   }
50:   return newWorkersRpcResponse(c.req....

<path>/home/jm/data/code/opencode-trees/fr-capnweb-persistence/packages/cloudsession/src/rpc.ts</path>
<type>file</type>
<content>1: import { RpcTarget } from "capnweb"
2: import { v5 as uuidv5 } from "uuid"
3: import type { SessionBroadcast as SessionBroadcastType } from "./broadcast.ts"
4: import type { ProbeCallback, ProbeValueInput, ProbeValueOutput } from "./rpc-contract.ts"
5: import { createStorageAdapter, type StorageAdapter } from "./storage.ts"
6: import type { AgentSession, SessionIndex, SyncData, SyncInfo } from "./types.ts"
7: import { DEFAULT_METADATA } from "./types.ts"
8: 
9: type Env = {
10:   SESSIONS_STORE: R2Bucket
11:   SESSIONS_SHARED_SECRET: string
12:   API_DOMAIN: string
13:   SESSIONS_BROADCAST: DurableObjectNamespace<SessionBroadcastType>
14: }
15: 
16: export class ShareRpcImpl extends RpcTarget {
17:   constructor(private env: Env) {
18:     super()
19:   }
20: 
21:   async createShare(sessionID: string): Promise<SyncInfo> {
22:     const { sessions, index } = this.storage()
23:     const shareID = sessionID.slice(-8)
24:     const secret = uuidv5(sessionID, this.env.SESSIONS_SHARED_SECRET)
25:     const now = Date.now()
26:     const info: SyncInfo = {
27:       id: shareID,
28:       secret,
29:       url: `https://${this.env.API_DOMAIN}/share/${shareID}`,
30:     }
31: 
32:     const initial: AgentSession = {
33:       session: {
34:         id: sessionID,
35:         slug: sessionID,
36:         projectID: "",
37:         directory: "",
38:         title: "",
39:         version: "1",
40:         time: {
41:           created: now,
42:           updated: now,
43:         },
44:       },
45:       messages: [],
46:       parts: [],
47:       diffs: [],
48:       models: [],
49:       metadata: {
50:         createdAt: now,
51:         lastUpdated: now,
52:         syncCount: 0,
53:         secret,
54:         sessionID,
55:         cursor: DEFAULT_METADATA.cursor,
56:         capabilityEpoch: DEFAULT_METADATA.capabilityEpoch,
57:     ...

<path>/home/jm/data/code/opencode-trees/fr-capnweb-persistence/.opencode/context/project/project-plan.md</path>
<type>file</type>
<content>1: # Durable Share Replay Prototype - Executable Plan
2: 
3: Status: `ready`
4: Default dedupe strategy: `bounded recent-op window` (selected for v1)
5: 
6: ## Standard Per-Step Operating Procedure
7: 
8: Every step must follow this 10-point checklist:
9: 
10: 1. **Context refresh** - Review the current plan state, prior step outcomes, and any blockers or drift notes.
11: 2. **Dependency check** - Verify all prerequisite steps are complete and no downstream impacts are at risk.
12: 3. **Scoped analysis** - Identify the minimal surface area for changes; document expected vs. out-of-scope work.
13: 4. **Implementation delegation** - Assign coding tasks to appropriate agents with clear boundaries.
14: 5. **Verification** - Run required tests, typechecks, and manual validation before marking complete.
15: 6. **Downstream re-evaluation** - Identify any impact on pending steps; update their scopes if needed.
16: 7. **Plan check-off** - Mark the step complete in this plan document.
17: 8. **Metrics log entry** - Append a line to `project-metrics.md` with timestamp, step, agents, and pass/fail.
18: 9. **Optional escalation** - If blockers emerge that exceed step scope, escalate to project-lead for reassignment or plan amendment.
19: 10. **Readiness decision** - Confirm next step can begin, or document why a pause/rework is required.
20: 
21: ## Execution Loop (run after every step)
22: 1. `analyzer` validates current step outputs and reports blockers, drift, and dependency impact.
23: 2. Project lead updates the next step scope (tighten/expand tests, reorder if needed).
24: 3. Only proceed when verification gates pass, or when an approved fallback path is documented.
25: 
26: ## Dependency Graph
27: - Parallel start: Step 1 + test scaffolding for Steps 3/4/8/9
28: - Then: Steps 2 -> 3 -> 4
29: - In parallel after Step 1: Step 5
30: - The...

<path>/home/jm/data/code/opencode-trees/fr-capnweb-persistence/.opencode/context/project/project-metrics.md</path>
<type>file</type>
<content>1: # Project Metrics
2: 
3: - 2026-02-22T15:52:57+00:00 | task: convert durability plan to executable subagent workflow | agent: project-lead | status: completed
4: - 2026-02-22T16:01:00+00:00 | step: 1 | agent: coder-agent | verification: opencode=pass, cloudsession=blocked | status: completed
5: - 2026-02-22T16:30:00+00:00 | step: 2 | agent: coder-agent | verification: pass (30 tests, 0 fail) | status: completed
6: 

(End of file - total 6 lines)
</content>

task_id: ses_3790d55e0ffeOUd8kp0ZmkQerf (for resuming to continue this task if needed)

<task_result>
## Step 2 Audit Report

### Verdict: **NOT COMPLETE** ❌

---

## Concrete Gaps

### 🔴 Gap 1: Missing Defaulting Logic on Read (CRITICAL)

**Requirement**: "default missing fields on read for old records"

**Current State**: NO defaulting exists. Legacy sessions without `cursor`, `capabilityEpoch`, or `appliedRecent` fields will have `undefined` values.

**Affected Read Paths**:
1. `GET /api/share/:id` (index.tsx:273-287) - direct return from storage
2. `POST /api/share/:id/sync` (index.tsx:182) - reads before secret check
3. `ShareRpcImpl.syncShare` (rpc.ts:81) - reads session metadata

**Impact**: 
- TypeScript types expect these fields (non-optional in `SessionMetadata`)
- Accessing `session.metadata.cursor` on legacy sessions returns `undefined`
- Could cause downstream errors in Step 3/4 when these fields are used
- Violates backwards compatibility guarantee

---

### 🟡 Gap 2: Field Naming Documentation (MEDIUM)

**Requirement**: Plan mentions `applied_recent` (snake_case)

**Current State**: Implementation uses `appliedRecent` (camelCase)

**Analysis**:
- `SessionMetadata` uses camelCase for ALL fields: `createdAt`, `lastUpdated`, `syncCount`, `sessionID`, `cursor`, `capabilityEpoch`, `appliedRecent`
- This is **internally consistent** with the type definition
- Plan likely used `applied_recent` as shorthand reference
- Implementation follows the established camelCase pattern

**Recommendation**: Keep `appliedRecent` but add a clarifying comment in `types.ts` referencing the plan terminology.

---

### ✅ What IS Working

1. ✅ Metadata fields exist in `SessionMetadata` type
2. ✅ `DEFAULT_METADATA` constants defined correctly (cursor: 0, capabilityEpoch: 1, appliedRecent: [])
3. ✅ New sessions get initialized with defaults in both `index.tsx` and `rpc.ts`
4. ✅ All 30 tests pass
5. ✅ Typecheck passes

---

## Exact Fixes Required

### Fix 1: Add Metadata Normali...

task_id: ses_3790b7e39ffeU2tnmTXtRRfHWl (for resuming to continue this task if needed)

<task_result>

</task_result>

task_id: ses_3790b7e39ffeU2tnmTXtRRfHWl (for resuming to continue this task if needed)

<task_result>
 ## Step 2 Remediation - Completion Report

### Files Changed

| File | Changes |
|------|---------|
| `packages/cloudsession/src/types.ts` | Added `normalizeMetadata()` helper to apply defaults for legacy records missing `cursor`, `capabilityEpoch`, `appliedRecent` |
| `packages/cloudsession/src/index.tsx` | Applied normalization after reading sessions in GET /api/share/:id, POST /api/share/:id/sync, DELETE /api/share/:id, and GET /share/:id |
| `packages/cloudsession/src/rpc.ts` | Applied normalization in `syncShare()` method before secret checks |
| `packages/cloudsession/src/api.test.ts` | Added 2 tests for legacy session compatibility |

### Test Results

```
bun test --preload ./src/preload.ts src/api.test.ts src/index.test.ts

 32 pass
 0 fail
 103 expect() calls
Ran 32 tests across 2 files. [125.00ms]
```

### New Tests Added

1. **`defaults missing replay fields when reading legacy session`** - Verifies that legacy records missing `cursor`, `capabilityEpoch`, `appliedRecent` are defaulted to `0`, `1`, `[]` respectively
2. **`allows sync on legacy session with defaulted fields`** - Verifies that sync operations work on legacy sessions and preserve the defaulted values

### Step 2 Status

**[x] Step 2 fully satisfies exit criteria**

- Missing replay fields are defaulted when reading legacy sessions
- Both HTTP API path and RPC path normalize metadata before secret checks/usage
- Create paths initialize `appliedRecent` (already present in existing code)
- Tests prove legacy-defaulting is covered

### Field Name Note

The implementation uses `appliedRecent` (camelCase) in the TypeScript metadata object, consistent with existing code patterns. The storage layer uses snake_case for SQL fields, but the TypeScript types use camelCase as per the codebase convention.
</task_result>

<path>/home/jm/data/code/opencode-trees/fr-capnweb-persistence/packages/cloudsession/src/types.ts</path>
<type>file</type>
<content>1: /**
2:  * SDK Types for OpenCode Agent Sessions
3:  * Import core types from @opencode-ai/sdk/v2
4:  */
5: import type { Session, Message, Part, FileDiff, Model } from "@opencode-ai/sdk/v2"
6: 
7: // Re-export SDK types for convenience
8: export type { Session, Message, Part, FileDiff, Model }
9: 
10: /**
11:  * Sync data discriminated union type
12:  * Represents the different types of data that can be synchronized
13:  */
14: export type SyncData =
15:   | { type: "session"; data: Session }
16:   | { type: "message"; data: Message }
17:   | { type: "part"; data: Part }
18:   | { type: "session_diff"; data: FileDiff[] }
19:   | { type: "model"; data: Model[] }
20: 
21: /**
22:  * Complete agent session structure
23:  * This represents a fully reconstructed session from sync data
24:  */
25: export type SessionMetadata = {
26:   createdAt: number
27:   lastUpdated: number
28:   syncCount: number
29:   secret: string
30:   sessionID: string
31:   // Durable replay fields (initialized with defaults for backwards compatibility)
32:   cursor: number
33:   capabilityEpoch: number
34:   appliedRecent: string[]
35: }
36: 
37: /**
38:  * Default metadata values for durable replay fields.
39:  * Use when creating new sessions or normalizing legacy records.
40:  */
41: export const DEFAULT_METADATA = {
42:   cursor: 0,
43:   capabilityEpoch: 1,
44:   appliedRecent: [] as string[],
45: } as const
46: 
47: /**
48:  * Normalizes session metadata, applying defaults for legacy records missing fields.
49:  * Call this immediately after reading a session from storage.
50:  */
51: export function normalizeMetadata(
52:   metadata: Partial<SessionMetadata> &
53:     Pick<SessionMetadata, "createdAt" | "lastUpdated" | "syncCount" | "secret" | "sessionID">,
54: ): SessionMetadata {
55:   return {
56:     createdAt: metadata.createdAt,
57:     lastUpdated...

<path>/home/jm/data/code/opencode-trees/fr-capnweb-persistence/packages/cloudsession/src/api.test.ts</path>
<type>file</type>
<content>1: import { describe, expect, test, beforeEach } from "bun:test"
2: import app from "./index.tsx"
3: import type { AgentSession, SyncInfo, SessionIndex } from "./types"
4: import { createTestFileDiff, createTestMessage, createTestModel, createTestPart, createTestSession } from "./test-utils"
5: 
6: const SHARED_SECRET = "6ba7b810-9dad-11d1-80b4-00c04fd430c8"
7: 
8: type TestEnv = {
9:   SESSIONS_STORE: R2Bucket
10:   SESSIONS_SHARED_SECRET: string
11:   API_DOMAIN: string
12:   SESSIONS_BROADCAST: DurableObjectNamespace
13: }
14: 
15: function createMockR2Bucket() {
16:   const storage = new Map<string, string>()
17: 
18:   return {
19:     put: async (key: string, value: string | ArrayBuffer | ReadableStream) => {
20:       let content = ""
21:       if (typeof value === "string") {
22:         content = value
23:       } else if (value instanceof ArrayBuffer) {
24:         content = new TextDecoder().decode(value)
25:       } else if (value instanceof ReadableStream) {
26:         const reader = value.getReader()
27:         const chunks: Uint8Array[] = []
28:         while (true) {
29:           const { done, value: chunk } = await reader.read()
30:           if (done) break
31:           chunks.push(chunk)
32:         }
33:         content = new TextDecoder().decode(Buffer.concat(chunks))
34:       }
35:       storage.set(key, content)
36:     },
37:     get: async (key: string) => {
38:       const data = storage.get(key)
39:       if (!data) return null
40:       return {
41:         async text() {
42:           return data
43:         },
44:         async arrayBuffer() {
45:           return new TextEncoder().encode(data).buffer
46:         },
47:         async json() {
48:           return JSON.parse(data)
49:         },
50:       }
51:     },
52:     delete: async (key: string) => {
53:       storage.delete(key)
54:     },
5...

<path>/home/jm/data/code/opencode-trees/fr-capnweb-persistence/.opencode/context/project/project-plan.md</path>
<type>file</type>
<content>1: # Durable Share Replay Prototype - Executable Plan
2: 
3: Status: `ready`
4: Default dedupe strategy: `bounded recent-op window` (selected for v1)
5: 
6: ## Standard Per-Step Operating Procedure
7: 
8: Every step must follow this 10-point checklist:
9: 
10: 1. **Context refresh** - Review the current plan state, prior step outcomes, and any blockers or drift notes.
11: 2. **Dependency check** - Verify all prerequisite steps are complete and no downstream impacts are at risk.
12: 3. **Scoped analysis** - Identify the minimal surface area for changes; document expected vs. out-of-scope work.
13: 4. **Implementation delegation** - Assign coding tasks to appropriate agents with clear boundaries.
14: 5. **Verification** - Run required tests, typechecks, and manual validation before marking complete.
15: 6. **Downstream re-evaluation** - Identify any impact on pending steps; update their scopes if needed.
16: 7. **Plan check-off** - Mark the step complete in this plan document.
17: 8. **Metrics log entry** - Append a line to `project-metrics.md` with timestamp, step, agents, and pass/fail.
18: 9. **Optional escalation** - If blockers emerge that exceed step scope, escalate to project-lead for reassignment or plan amendment.
19: 10. **Readiness decision** - Confirm next step can begin, or document why a pause/rework is required.
20: 
21: ## Execution Loop (run after every step)
22: 1. `analyzer` validates current step outputs and reports blockers, drift, and dependency impact.
23: 2. Project lead updates the next step scope (tighten/expand tests, reorder if needed).
24: 3. Only proceed when verification gates pass, or when an approved fallback path is documented.
25: 
26: ## Dependency Graph
27: - Parallel start: Step 1 + test scaffolding for Steps 3/4/8/9
28: - Then: Steps 2 -> 3 -> 4
29: - In parallel after Step 1: Step 5
30: - The...

<path>/home/jm/data/code/opencode-trees/fr-capnweb-persistence/.opencode/context/project/project-metrics.md</path>
<type>file</type>
<content>1: # Project Metrics
2: 
3: - 2026-02-22T15:52:57+00:00 | task: convert durability plan to executable subagent workflow | agent: project-lead | status: completed
4: - 2026-02-22T16:01:00+00:00 | step: 1 | agent: coder-agent | verification: opencode=pass, cloudsession=blocked | status: completed
5: - 2026-02-22T16:30:00+00:00 | step: 2 | agent: coder-agent | verification: pass (30 tests, 0 fail) | status: completed
6: 

(End of file - total 6 lines)
</content>

task_id: ses_379061473ffehXKippZUfa1e2t (for resuming to continue this task if needed)

<task_result>

</task_result>

task_id: ses_379061473ffehXKippZUfa1e2t (for resuming to continue this task if needed)

<task_result>
 **Step 2 Alignment Report**

| Task | Status |
|------|--------|
| Rename `appliedRecent` → `applied_recent` in types.ts | ✅ Complete |
| Rename in index.tsx | ✅ Complete |
| Rename in rpc.ts | ✅ Complete |
| Rename in api.test.ts (2 assertions) | ✅ Complete |
| Keep `cursor` and `capabilityEpoch` as-is | ✅ Verified |
| Preserve legacy normalization | ✅ Verified |

**Files Modified:**
- `packages/cloudsession/src/types.ts` (type def, DEFAULT_METADATA, normalizeMetadata)
- `packages/cloudsession/src/index.tsx` (initial metadata)
- `packages/cloudsession/src/rpc.ts` (initial metadata)
- `packages/cloudsession/src/api.test.ts` (test assertions)
- `.opencode/context/project/project-metrics.md` (alignment entry added)

**Test Results:**
```
bun test v1.3.9
32 pass
0 fail
103 expect() calls
Ran 32 tests across 2 files. [112.00ms]
```

All durable replay fields now align with plan terminology (`applied_recent` in snake_case).
</task_result>

<path>/home/jm/data/code/opencode-trees/fr-capnweb-persistence/packages/cloudsession/src/types.ts</path>
<type>file</type>
<content>1: /**
2:  * SDK Types for OpenCode Agent Sessions
3:  * Import core types from @opencode-ai/sdk/v2
4:  */
5: import type { Session, Message, Part, FileDiff, Model } from "@opencode-ai/sdk/v2"
6: 
7: // Re-export SDK types for convenience
8: export type { Session, Message, Part, FileDiff, Model }
9: 
10: /**
11:  * Sync data discriminated union type
12:  * Represents the different types of data that can be synchronized
13:  */
14: export type SyncData =
15:   | { type: "session"; data: Session }
16:   | { type: "message"; data: Message }
17:   | { type: "part"; data: Part }
18:   | { type: "session_diff"; data: FileDiff[] }
19:   | { type: "model"; data: Model[] }
20: 
21: /**
22:  * Complete agent session structure
23:  * This represents a fully reconstructed session from sync data
24:  */
25: export type SessionMetadata = {
26:   createdAt: number
27:   lastUpdated: number
28:   syncCount: number
29:   secret: string
30:   sessionID: string
31:   // Durable replay fields (initialized with defaults for backwards compatibility)
32:   cursor: number
33:   capabilityEpoch: number
34:   applied_recent: string[]
35: }
36: 
37: /**
38:  * Default metadata values for durable replay fields.
39:  * Use when creating new sessions or normalizing legacy records.
40:  */
41: export const DEFAULT_METADATA = {
42:   cursor: 0,
43:   capabilityEpoch: 1,
44:   applied_recent: [] as string[],
45: } as const
46: 
47: /**
48:  * Normalizes session metadata, applying defaults for legacy records missing fields.
49:  * Call this immediately after reading a session from storage.
50:  */
51: export function normalizeMetadata(
52:   metadata: Partial<SessionMetadata> &
53:     Pick<SessionMetadata, "createdAt" | "lastUpdated" | "syncCount" | "secret" | "sessionID">,
54: ): SessionMetadata {
55:   return {
56:     createdAt: metadata.createdAt,
57:     lastUpdat...

<path>/home/jm/data/code/opencode-trees/fr-capnweb-persistence/packages/cloudsession/src/index.tsx</path>
<type>file</type>
<content>120:       messages: [],
121:       parts: [],
122:       diffs: [],
123:       models: [],
124:       metadata: {
125:         createdAt: credentialsData.createdAt,
126:         lastUpdated: now,
127:         syncCount: 0,
128:         secret: shareSecret,
129:         sessionID: sessionID,
130:         cursor: DEFAULT_METADATA.cursor,
131:         capabilityEpoch: DEFAULT_METADATA.capabilityEpoch,
132:         applied_recent: DEFAULT_METADATA.applied_recent,
133:       },
134:     }
135: 
136:     const initialIndex: SessionIndex = {
137:       id: shareID,
138:       sessionID,
139:       title: "",
140:       directory: "",
141:       messageCount: 0,
142:       partCount: 0,
143:       diffCount: 0,
144:       modelCount: 0,
145:       lastUpdated: now,
146:       syncCount: 0,
147:       createdAt: now,
148:     }
149: 
150:     await Promise.all([sessions.put(`share/${shareID}`, initialSession), index.put(`index/${shareID}`, initialIndex)])
151: 
152:     return c.json(info)
153:   },
154: )
155: 
156: /**
157:  * Sync data to a share
158:  * POST /api/share/:id/sync
159:  */
160: app.post(
161:   "/api/share/:id/sync",
162:   zValidator(
163:     "json",
164:     z.object({
165:       secret: z.string(),
166:       data: z.array(
167:         z.discriminatedUnion("type", [
168:           z.object({ type: z.literal("session"), data: z.any() }),
169:           z.object({ type: z.literal("message"), data: z.any() }),
170:           z.object({ type: z.literal("part"), data: z.any() }),
171:           z.object({ type: z.literal("session_diff"), data: z.array(z.any()) }),
172:           z.object({ type: z.literal("model"), data: z.array(z.any()) }),
173:         ]),
174:       ),
175:     }),
176:   ),
177:   async (c) => {
178:     const shareID = c.req.param("id")
179:     const { secret, data } = c.req.valid("json")
180:     const...

<path>/home/jm/data/code/opencode-trees/fr-capnweb-persistence/packages/cloudsession/src/rpc.ts</path>
<type>file</type>
<content>45:       messages: [],
46:       parts: [],
47:       diffs: [],
48:       models: [],
49:       metadata: {
50:         createdAt: now,
51:         lastUpdated: now,
52:         syncCount: 0,
53:         secret,
54:         sessionID,
55:         cursor: DEFAULT_METADATA.cursor,
56:         capabilityEpoch: DEFAULT_METADATA.capabilityEpoch,
57:         applied_recent: DEFAULT_METADATA.applied_recent,
58:       },
59:     }
60: 
61:     const initialIndex: SessionIndex = {
62:       id: shareID,
63:       sessionID,
64:       title: "",
65:       directory: "",
66:       messageCount: 0,
67:       partCount: 0,
68:       diffCount: 0,
69:       modelCount: 0,
70:       lastUpdated: now,
71:       syncCount: 0,
72:       createdAt: now,
73:     }
74: 
75:     await Promise.all([sessions.put(`share/${shareID}`, initial), index.put(`index/${shareID}`, initialIndex)])
76:     return info
77:   }
78: 
79:   async syncShare(shareID: string, secret: string, data: SyncData[]) {
80:     const { sessions, index } = this.storage()
81:     const rawSession = await sessions.get(`share/${shareID}`)
82:     if (!rawSession) {
83:       throw new Error("Share not found")
84:     }
85: 
86:     const agentSession: AgentSession = {
87:       ...rawSession,
88:       metadata: normalizeMetadata(rawSession.metadata),
89:     }
90: 
91:     if (agentSession.metadata.secret !== secret) {
92:       throw new Error("Invalid secret")
93:     }
94: 
95:     const now = Date.now()
96:     const next: AgentSession = {
97:       ...agentSession,
98:       metadata: {
99:         ...agentSession.metadata,
100:         lastUpdated: now,
101:         syncCount: agentSession.metadata.syncCount + 1,
102:       },
103:     }
104: 
105:     for (const item of data) {
106:       if (item.type === "session") {
107:         next.session = item.data
108:         continue
109: ...

<path>/home/jm/data/code/opencode-trees/fr-capnweb-persistence/.opencode/context/project/project-metrics.md</path>
<type>file</type>
<content>1: # Project Metrics
2: 
3: - 2026-02-22T15:52:57+00:00 | task: convert durability plan to executable subagent workflow | agent: project-lead | status: completed
4: - 2026-02-22T16:01:00+00:00 | step: 1 | agent: coder-agent | verification: opencode=pass, cloudsession=blocked | status: completed
5: - 2026-02-22T16:30:00+00:00 | step: 2 | agent: coder-agent | verification: pass (30 tests, 0 fail) | status: completed
6: - 2026-02-22T17:15:00+00:00 | step: 2-alignment | agent: coder-agent | verification: pass (32 tests, 0 fail) | note: renamed appliedRecent -> applied_recent | status: completed
7: 

(End of file - total 7 lines)
</content>

<path>/home/jm/data/code/opencode-trees/fr-capnweb-persistence/packages/cloudsession/src/index.tsx</path>
<type>file</type>
<content>1: import { Hono } from "hono"
2: import { cors } from "hono/cors"
3: import { newWorkersRpcResponse } from "capnweb"
4: import { zValidator } from "@hono/zod-validator"
5: import { z } from "zod"
6: import { v5 as uuidv5 } from "uuid"
7: import type { SyncInfo, ShareCredentials, AgentSession, SessionIndex } from "./types.ts"
8: import { DEFAULT_METADATA, normalizeMetadata } from "./types.ts"
9: import { createStorageAdapter, type StorageAdapter } from "./storage.ts"
10: import SessionList from "./views/session-list.tsx"
11: import SessionDetail from "./views/session-detail.tsx"
12: import NotFound from "./views/not-found.tsx"
13: import { ShareRpcImpl } from "./rpc.ts"
14: 
15: import type { SessionBroadcast as SessionBroadcastType } from "./broadcast.ts"
16: 
17: // Re-export Durable Object class (required by wrangler)
18: export { SessionBroadcast } from "./broadcast.ts"
19: 
20: /**

(File has more lines. Use 'offset' parameter to read beyond line 20)
</content>

<path>/home/jm/data/code/opencode-trees/fr-capnweb-persistence/packages/cloudsession/src/rpc.ts</path>
<type>file</type>
<content>1: import { RpcTarget } from "capnweb"
2: import { v5 as uuidv5 } from "uuid"
3: import type { SessionBroadcast as SessionBroadcastType } from "./broadcast.ts"
4: import type { ProbeCallback, ProbeValueInput, ProbeValueOutput } from "./rpc-contract.ts"
5: import { createStorageAdapter, type StorageAdapter } from "./storage.ts"
6: import type { AgentSession, SessionIndex, SyncData, SyncInfo } from "./types.ts"
7: import { DEFAULT_METADATA, normalizeMetadata } from "./types.ts"
8: 
9: type Env = {
10:   SESSIONS_STORE: R2Bucket
11:   SESSIONS_SHARED_SECRET: string
12:   API_DOMAIN: string
13:   SESSIONS_BROADCAST: DurableObjectNamespace<SessionBroadcastType>
14: }
15: 

(File has more lines. Use 'offset' parameter to read beyond line 15)
</content>

task_id: ses_379041a97ffeCMZ1IV4UDJ9NAJ (for resuming to continue this task if needed)

<task_result>
Based on my analysis of the repository state, here is the downstream re-evaluation after Step 2:

---

## Step 3 Readiness Assessment: ⚠️ **CONDITIONAL GO** with Required Adjustments

### Current State Summary

**Step 1 (Contract Definition) ✅ COMPLETED:**
- `DurableOp`, `OpAck`, `ShareRedemption` types defined in both packages
- `redeemShare`, `appendOps`, `revokeCapability` added to ShareRpc interface
- Contract synchronized between `packages/cloudsession` and `packages/opencode`

**Step 2 (Metadata Infrastructure) ✅ COMPLETED:**
- Added `cursor: number`, `capabilityEpoch: number`, `applied_recent: string[]` to SessionMetadata
- `DEFAULT_METADATA` constant with sensible defaults (cursor=0, epoch=1, applied_recent=[])
- `normalizeMetadata()` function for legacy record backward compatibility
- All read paths (`GET /api/share/:id`, `syncShare`, `delete`, etc.) use `normalizeMetadata()`
- ✅ **42 tests passing**, including legacy compatibility tests

---

### Contract Compatibility Analysis

#### ⚠️ **CRITICAL ISSUE: Naming Inconsistency**

**The Problem:** Step 1 contract types use `snake_case` while Step 2 metadata uses `camelCase`:

| Field | SessionMetadata (Step 2) | Contract Types (Step 1) |
|-------|------------------------|------------------------|
| Capability epoch | `capabilityEpoch` | `capability_epoch` |
| Session ID | `sessionID` | `session_id` |
| Share ID | N/A (in SyncInfo as `id`) | `share_id` |

**Impact:** Step 3 implementation will require field name mapping when:
- Converting SessionMetadata to ShareRedemption (return value of `redeemShare`)
- Mapping DurableOp fields to internal storage/query logic
- Handling OpAck response serialization

**Example churn:**
```typescript
// redeemShare would need to map:
{
  share_id: sessionID, // but metadata has sessionID
  cursor: metadata.cursor, // ✅ matches
  capability_epoch: metadata.capabilityEpoch, // ...

bun test v1.3.9 (cf6cdbbb)

 32 pass
 0 fail
 103 expect() calls
Ran 32 tests across 2 files. [126.00ms]

task_id: ses_37901bfccffeMF9UHlh1wpVdld (for resuming to continue this task if needed)

<task_result>
Based on my analysis of the codebase, here's the **step 3 scoped analysis** for implementing `redeemShare` RPC server:

---

## Current RPC Patterns Analysis

### Structure from `rpc.ts`
1. **Class**: `ShareRpcImpl` extends `RpcTarget`
2. **Env Type**: 
   ```typescript
   type Env = {
     SESSIONS_STORE: R2Bucket
     SESSIONS_SHARED_SECRET: string
     API_DOMAIN: string
     SESSIONS_BROADCAST: DurableObjectNamespace<SessionBroadcastType>
   }
   ```
3. **Storage access**: Private `storage()` method returning typed adapters:
   ```typescript
   private storage(): { 
     sessions: StorageAdapter<AgentSession>; 
     index: StorageAdapter<SessionIndex> 
   }
   ```
4. **Error patterns**: Throws `Error` with string messages:
   - `"Share not found"` 
   - `"Invalid secret"`
5. **Metadata handling**: Uses `normalizeMetadata()` for legacy records
6. **Key pattern** for retrieval:
   ```typescript
   const rawSession = await sessions.get(`share/${shareID}`)
   if (!rawSession) throw new Error("Share not found")
   const agentSession: AgentSession = { ...rawSession, metadata: normalizeMetadata(rawSession.metadata) }
   if (agentSession.metadata.secret !== secret) throw new Error("Invalid secret")
   ```

### Test Patterns from `api.test.ts`
1. **Mock R2 bucket**: In-memory Map with `put`, `get`, `delete`, `list` methods
2. **Helper functions**: 
   - `createEnv()` - creates TestEnv with all bindings
   - `createShare(sessionID, env)` - returns `{ response, data: SyncInfo }`
3. **Test structure**:
   ```typescript
   describe("suite name", () => {
     let env: TestEnv
     beforeEach(() => { env = createEnv() })
     test("test description", async () => { /* assertions */ })
   })
   ```
4. **Assertions**: `expect(response.status).toBe(200)`, `expect(data.field).toBe(...)`

### Storage Patterns from `storage.ts`
- `StorageAdapter<T>` interface with `get(key): Promise<...

task_id: ses_37900d536ffe8fal8tlLwoMDVn (for resuming to continue this task if needed)

<task_result>
 All tests pass. Here's the summary:

## Changes Made

### 1. `packages/cloudsession/src/rpc.ts`
- Added imports for `DurableOp`, `OpAck`, and `ShareRedemption` from `rpc-contract.ts`
- Added `redeemShare(shareID, secret)` method:
  - Returns cursor, capability_epoch, created_at, and session_id per `ShareRedemption` contract
  - Uses `normalizeMetadata()` for backwards compatibility with legacy sessions
  - Validates share existence and secret before returning metadata
- Added `appendOps(shareID, secret, capabilityEpoch, ops)` stub:
  - Validates share + secret + capabilityEpoch against metadata
  - Rejects with "Stale capability epoch" when epoch doesn't match
  - Returns empty ack shape when epoch matches (full implementation in Step 4)

### 2. `packages/cloudsession/src/rpc.persistence.test.ts` (new file)
Tests cover:
- `redeemShare`: Stable cursor for same share, invalid secret rejection, non-existent share handling, legacy metadata normalization
- `appendOps`: Stale epoch rejection (old and future epochs), valid epoch returns empty ack, invalid secret rejection, non-existent share handling

## Test Results
```
✓ rpc.persistence.test.ts: 10 pass, 0 fail
✓ api.test.ts + index.test.ts: 32 pass, 0 fail
Total: 42 tests, 0 failures
```

## Project Documentation Updated
- Marked Step 3 as complete `[x]` in `project-plan.md`
- Added Step 3 metrics entry in `project-metrics.md`
</task_result>

<path>/home/jm/data/code/opencode-trees/fr-capnweb-persistence/packages/cloudsession/src/rpc.ts</path>
<type>file</type>
<content>1: import { RpcTarget } from "capnweb"
2: import { v5 as uuidv5 } from "uuid"
3: import type { SessionBroadcast as SessionBroadcastType } from "./broadcast.ts"
4: import type {
5:   DurableOp,
6:   OpAck,
7:   ProbeCallback,
8:   ProbeValueInput,
9:   ProbeValueOutput,
10:   ShareRedemption,
11: } from "./rpc-contract.ts"
12: import { createStorageAdapter, type StorageAdapter } from "./storage.ts"
13: import type { AgentSession, SessionIndex, SyncData, SyncInfo } from "./types.ts"
14: import { DEFAULT_METADATA, normalizeMetadata } from "./types.ts"
15: 
16: type Env = {
17:   SESSIONS_STORE: R2Bucket
18:   SESSIONS_SHARED_SECRET: string
19:   API_DOMAIN: string
20:   SESSIONS_BROADCAST: DurableObjectNamespace<SessionBroadcastType>
21: }
22: 
23: export class ShareRpcImpl extends RpcTarget {
24:   constructor(private env: Env) {
25:     super()
26:   }
27: 
28:   async createShare(sessionID: string): Promise<SyncInfo> {
29:     const { sessions, index } = this.storage()
30:     const shareID = sessionID.slice(-8)
31:     const secret = uuidv5(sessionID, this.env.SESSIONS_SHARED_SECRET)
32:     const now = Date.now()
33:     const info: SyncInfo = {
34:       id: shareID,
35:       secret,
36:       url: `https://${this.env.API_DOMAIN}/share/${shareID}`,
37:     }
38: 
39:     const initial: AgentSession = {
40:       session: {
41:         id: sessionID,
42:         slug: sessionID,
43:         projectID: "",
44:         directory: "",
45:         title: "",
46:         version: "1",
47:         time: {
48:           created: now,
49:           updated: now,
50:         },
51:       },
52:       messages: [],
53:       parts: [],
54:       diffs: [],
55:       models: [],
56:       metadata: {
57:         createdAt: now,
58:         lastUpdated: now,
59:         syncCount: 0,
60:         secret,
61:         sessionID,
62:         cursor: D...

<path>/home/jm/data/code/opencode-trees/fr-capnweb-persistence/packages/cloudsession/src/rpc.persistence.test.ts</path>
<type>file</type>
<content>1: import { describe, expect, test, beforeEach } from "bun:test"
2: import { ShareRpcImpl } from "./rpc"
3: import type { AgentSession } from "./types"
4: import type { SessionBroadcast as SessionBroadcastType } from "./broadcast"
5: 
6: const SHARED_SECRET = "6ba7b810-9dad-11d1-80b4-00c04fd430c8"
7: 
8: function createMockR2Bucket() {
9:   const storage = new Map<string, string>()
10: 
11:   return {
12:     put: async (key: string, value: string | ArrayBuffer | ReadableStream) => {
13:       let content = ""
14:       if (typeof value === "string") {
15:         content = value
16:       } else if (value instanceof ArrayBuffer) {
17:         content = new TextDecoder().decode(value)
18:       } else if (value instanceof ReadableStream) {
19:         const reader = value.getReader()
20:         const chunks: Uint8Array[] = []
21:         while (true) {
22:           const { done, value: chunk } = await reader.read()
23:           if (done) break
24:           chunks.push(chunk)
25:         }
26:         content = new TextDecoder().decode(Buffer.concat(chunks))
27:       }
28:       storage.set(key, content)
29:     },
30:     get: async (key: string) => {
31:       const data = storage.get(key)
32:       if (!data) return null
33:       return {
34:         async text() {
35:           return data
36:         },
37:         async arrayBuffer() {
38:           return new TextEncoder().encode(data).buffer
39:         },
40:         async json() {
41:           return JSON.parse(data)
42:         },
43:       }
44:     },
45:     delete: async (key: string) => {
46:       storage.delete(key)
47:     },
48:   } as unknown as R2Bucket
49: }
50: 
51: function createMockDONamespace() {
52:   return {
53:     idFromName: () => ({ toString: () => "mock-id" }),
54:     get: () => ({
55:       broadcast: async () => {},
56:       f...

<path>/home/jm/data/code/opencode-trees/fr-capnweb-persistence/.opencode/context/project/project-plan.md</path>
<type>file</type>
<content>1: # Durable Share Replay Prototype - Executable Plan
2: 
3: Status: `ready`
4: Default dedupe strategy: `bounded recent-op window` (selected for v1)
5: 
6: ## Standard Per-Step Operating Procedure
7: 
8: Every step must follow this 10-point checklist:
9: 
10: 1. **Context refresh** - Review the current plan state, prior step outcomes, and any blockers or drift notes.
11: 2. **Dependency check** - Verify all prerequisite steps are complete and no downstream impacts are at risk.
12: 3. **Scoped analysis** - Identify the minimal surface area for changes; document expected vs. out-of-scope work.
13: 4. **Implementation delegation** - Assign coding tasks to appropriate agents with clear boundaries.
14: 5. **Verification** - Run required tests, typechecks, and manual validation before marking complete.
15: 6. **Downstream re-evaluation** - Identify any impact on pending steps; update their scopes if needed.
16: 7. **Plan check-off** - Mark the step complete in this plan document.
17: 8. **Metrics log entry** - Append a line to `project-metrics.md` with timestamp, step, agents, and pass/fail.
18: 9. **Optional escalation** - If blockers emerge that exceed step scope, escalate to project-lead for reassignment or plan amendment.
19: 10. **Readiness decision** - Confirm next step can begin, or document why a pause/rework is required.
20: 
21: ## Execution Loop (run after every step)
22: 1. `analyzer` validates current step outputs and reports blockers, drift, and dependency impact.
23: 2. Project lead updates the next step scope (tighten/expand tests, reorder if needed).
24: 3. Only proceed when verification gates pass, or when an approved fallback path is documented.
25: 
26: ## Dependency Graph
27: - Parallel start: Step 1 + test scaffolding for Steps 3/4/8/9
28: - Then: Steps 2 -> 3 -> 4
29: - In parallel after Step 1: Step 5
30: - The...

<path>/home/jm/data/code/opencode-trees/fr-capnweb-persistence/.opencode/context/project/project-metrics.md</path>
<type>file</type>
<content>1: # Project Metrics
2: 
3: - 2026-02-22T15:52:57+00:00 | task: convert durability plan to executable subagent workflow | agent: project-lead | status: completed
4: - 2026-02-22T16:01:00+00:00 | step: 1 | agent: coder-agent | verification: opencode=pass, cloudsession=blocked | status: completed
5: - 2026-02-22T16:30:00+00:00 | step: 2 | agent: coder-agent | verification: pass (30 tests, 0 fail) | status: completed
6: - 2026-02-22T17:15:00+00:00 | step: 2-alignment | agent: coder-agent | verification: pass (32 tests, 0 fail) | note: renamed appliedRecent -> applied_recent | status: completed
7: - 2026-02-22T17:35:00+00:00 | step: 3 | agent: coder-agent | verification: pass (42 tests, 0 fail) | tests: rpc.persistence.test.ts (10), api.test.ts+index.test.ts (32) | status: completed
8: 

(End of file - total 8 lines)
</content>

bun test v1.3.9 (cf6cdbbb)

 10 pass
 0 fail
 21 expect() calls
Ran 10 tests across 1 file. [16.00ms]

bun test v1.3.9 (cf6cdbbb)

 32 pass
 0 fail
 103 expect() calls
Ran 32 tests across 2 files. [135.00ms]

task_id: ses_378f6a40dffeL1FJRHkvd8ZoxA (for resuming to continue this task if needed)

<task_result>
Based on my analysis of the codebase, here's my assessment for **Step 4 readiness**:

---

## 🟢 **GO** - Ready to Proceed

### Current State Summary

**appendOps Stub Location:** `packages/cloudsession/src/rpc.ts` (lines 216-244)

**Current Implementation:**
- ✅ Secret validation (via metadata.secret comparison)
- ✅ Capability epoch staleness rejection (strict equality check)
- ✅ Empty ack return with current cursor
- ❌ **NO** op application logic
- ❌ **NO** duplicate detection
- ❌ **NO** dependency enforcement
- ❌ **NO** cursor advancement

**Available Metadata Fields** (`SessionMetadata`):
- `cursor: number` - current position (default: 0)
- `capabilityEpoch: number` - epoch for staleness checks (default: 1)
- `applied_recent: string[]` - bounded window for duplicate detection (default: `[]`)

**DurableOp Envelope Fields:**
- `op_id: string` - unique identifier per operation
- `batch_id: string` - logical batch grouping
- `seq: number` - sequence within batch
- `depends_on?: string` - dependency on another op_id
- `expected_cursor: number` - expected state before apply
- `payload: unknown` - actual operation to apply

---

## 📋 **Step 4 Implementation Checklist** (max 8 bullets)

1. **Validate expected_cursor** - reject ops where `op.expected_cursor ≠ metadata.cursor`
2. **Check dependencies** - verify `depends_on` ops are in `metadata.applied_recent` or mark rejected
3. **Detect duplicates** - skip ops with `op_id in metadata.applied_recent`, add to `ack.duplicates`
4. **Apply mutation** - execute `payload` against `AgentSession` (message/part/diff apply logic)
5. **Advance cursor** - increment `metadata.cursor` per successful op, return final value in `ack.cursor`
6. **Track applied ops** - add each `op_id` to `metadata.applied_recent`, enforce bounded window (1000 ops max)
7. **Persist state** - write updated `AgentSession` back to R2 via `sessions.put()`
8. ...

task_id: ses_378f59579ffeeyOf0ubiQsMU7d (for resuming to continue this task if needed)

<task_result>
  Step 4 is complete. Here's a summary of what was implemented:

## Changes Made

### 1. Modified `appendOps` in `packages/cloudsession/src/rpc.ts`
- **Idempotent op processing** with the following checks per op:
  - **Duplicate detection**: If `op_id` exists in bounded ledger → mark as duplicate
  - **Dependency validation**: If `depends_on` specified and not in ledger → reject with "Missing dependency"
  - **Cursor validation**: If `expected_cursor` doesn't match current cursor → reject with "Cursor mismatch"
  - **Mutation application**: Apply payload using existing sync semantics (session/message/part/session_diff/model)
  - **Cursor advancement**: Increment cursor after each successful apply
- **Structured ack payload**: Returns `{ cursor, applied, duplicates, rejected }`
- **Persistence**: Saves updated metadata (cursor, bounded `applied_recent`) and mutated session
- **Bounded ledger**: Maintains last 1000 ops to prevent unbounded growth
- **Kept existing auth and capability epoch checks intact**

### 2. Added `applyOp` helper method
Reuses existing sync mutation semantics for payload items (create/update for messages/parts/models, append for diffs).

### 3. Extended test file `rpc.persistence.test.ts`
Added 4 new test cases:
1. **"replay same batch does not double-apply"** - Verifies idempotency on replay
2. **"dependency order enforced"** - Verifies dependency checking rejects missing deps
3. **"mixed applied+duplicate+rejected ack shape stable"** - Verifies all three ack categories in one batch
4. **"cursor advances correctly with sequential ops"** - Verifies cursor increments properly

### 4. Updated project documentation
- Marked Step 4 complete in `project-plan.md`
- Added metrics line in `project-metrics.md` with timestamp and pass summary

## Verification Results
```
rpc.persistence.test.ts: 14 pass, 0 fail
api.test.ts + index.test.ts: 32 pass, 0 fail...

<path>/home/jm/data/code/opencode-trees/fr-capnweb-persistence/packages/cloudsession/src/rpc.ts</path>
<type>file</type>
<content>180:       when: input.when.toISOString(),
181:       bytes: Array.from(input.bytes),
182:       size: input.bytes.byteLength,
183:       nested: input.nested,
184:     }
185:   }
186: 
187:   async probeCallback(cb: ProbeCallback): Promise<string> {
188:     return await cb("server-called")
189:   }
190: 
191:   async redeemShare(shareID: string, secret: string): Promise<ShareRedemption> {
192:     const { sessions } = this.storage()
193:     const rawSession = await sessions.get(`share/${shareID}`)
194:     if (!rawSession) {
195:       throw new Error("Share not found")
196:     }
197: 
198:     const agentSession: AgentSession = {
199:       ...rawSession,
200:       metadata: normalizeMetadata(rawSession.metadata),
201:     }
202: 
203:     if (agentSession.metadata.secret !== secret) {
204:       throw new Error("Invalid secret")
205:     }
206: 
207:     return {
208:       share_id: shareID,
209:       cursor: agentSession.metadata.cursor,
210:       capability_epoch: agentSession.metadata.capabilityEpoch,
211:       created_at: new Date(agentSession.metadata.createdAt).toISOString(),
212:       session_id: agentSession.metadata.sessionID,
213:     }
214:   }
215: 
216:   async appendOps(shareID: string, secret: string, capabilityEpoch: number, ops: DurableOp[]): Promise<OpAck> {
217:     const { sessions, index } = this.storage()
218:     const rawSession = await sessions.get(`share/${shareID}`)
219:     if (!rawSession) {
220:       throw new Error("Share not found")
221:     }
222: 
223:     const agentSession: AgentSession = {
224:       ...rawSession,
225:       metadata: normalizeMetadata(rawSession.metadata),
226:     }
227: 
228:     if (agentSession.metadata.secret !== secret) {
229:       throw new Error("Invalid secret")
230:     }
231: 
232:     if (agentSession.metadata.capabilityEpoch !== capabilityEpoch) {
233:     ...

<path>/home/jm/data/code/opencode-trees/fr-capnweb-persistence/packages/cloudsession/src/rpc.persistence.test.ts</path>
<type>file</type>
<content>170: 
171:     expect(redemption.cursor).toBe(0) // DEFAULT_METADATA.cursor
172:     expect(redemption.capability_epoch).toBe(1) // DEFAULT_METADATA.capabilityEpoch
173:     expect(redemption.share_id).toBe(shareID)
174:   })
175: })
176: 
177: describe("appendOps", () => {
178:   let env: ReturnType<typeof createEnv>
179:   let rpc: ShareRpcImpl
180: 
181:   beforeEach(() => {
182:     env = createEnv()
183:     rpc = new ShareRpcImpl(env)
184:   })
185: 
186:   async function createShareDirectly(shareID: string, sessionID: string, secret: string, capabilityEpoch = 1) {
187:     const now = Date.now()
188:     const session: AgentSession = {
189:       session: {
190:         id: sessionID,
191:         slug: sessionID,
192:         projectID: "",
193:         directory: "",
194:         title: "Test",
195:         version: "1",
196:         time: { created: now, updated: now },
197:       },
198:       messages: [],
199:       parts: [],
200:       diffs: [],
201:       models: [],
202:       metadata: {
203:         createdAt: now,
204:         lastUpdated: now,
205:         syncCount: 0,
206:         secret,
207:         sessionID,
208:         cursor: 10,
209:         capabilityEpoch,
210:         applied_recent: [],
211:       },
212:     }
213:     await env.SESSIONS_STORE.put(`share/${shareID}`, JSON.stringify(session))
214:     return { shareID, secret, session }
215:   }
216: 
217:   test("rejects stale capability epoch", async () => {
218:     const { shareID, secret } = await createShareDirectly("test-share", "session-abc", "secret-123", 5)
219: 
220:     // Try to append with old epoch
221:     expect(rpc.appendOps(shareID, secret, 3, [])).rejects.toThrow("Stale capability epoch")
222:   })
223: 
224:   test("rejects when capability epoch is newer", async () => {
225:     const { shareID, secret } = await cre...

<path>/home/jm/data/code/opencode-trees/fr-capnweb-persistence/.opencode/context/project/project-plan.md</path>
<type>file</type>
<content>1: # Durable Share Replay Prototype - Executable Plan
2: 
3: Status: `ready`
4: Default dedupe strategy: `bounded recent-op window` (selected for v1)
5: 
6: ## Standard Per-Step Operating Procedure
7: 
8: Every step must follow this 10-point checklist:
9: 
10: 1. **Context refresh** - Review the current plan state, prior step outcomes, and any blockers or drift notes.
11: 2. **Dependency check** - Verify all prerequisite steps are complete and no downstream impacts are at risk.
12: 3. **Scoped analysis** - Identify the minimal surface area for changes; document expected vs. out-of-scope work.
13: 4. **Implementation delegation** - Assign coding tasks to appropriate agents with clear boundaries.
14: 5. **Verification** - Run required tests, typechecks, and manual validation before marking complete.
15: 6. **Downstream re-evaluation** - Identify any impact on pending steps; update their scopes if needed.
16: 7. **Plan check-off** - Mark the step complete in this plan document.
17: 8. **Metrics log entry** - Append a line to `project-metrics.md` with timestamp, step, agents, and pass/fail.
18: 9. **Optional escalation** - If blockers emerge that exceed step scope, escalate to project-lead for reassignment or plan amendment.
19: 10. **Readiness decision** - Confirm next step can begin, or document why a pause/rework is required.
20: 
21: ## Execution Loop (run after every step)
22: 1. `analyzer` validates current step outputs and reports blockers, drift, and dependency impact.
23: 2. Project lead updates the next step scope (tighten/expand tests, reorder if needed).
24: 3. Only proceed when verification gates pass, or when an approved fallback path is documented.
25: 
26: ## Dependency Graph
27: - Parallel start: Step 1 + test scaffolding for Steps 3/4/8/9
28: - Then: Steps 2 -> 3 -> 4
29: - In parallel after Step 1: Step 5
30: - The...

<path>/home/jm/data/code/opencode-trees/fr-capnweb-persistence/.opencode/context/project/project-metrics.md</path>
<type>file</type>
<content>1: # Project Metrics
2: 
3: - 2026-02-22T15:52:57+00:00 | task: convert durability plan to executable subagent workflow | agent: project-lead | status: completed
4: - 2026-02-22T16:01:00+00:00 | step: 1 | agent: coder-agent | verification: opencode=pass, cloudsession=blocked | status: completed
5: - 2026-02-22T16:30:00+00:00 | step: 2 | agent: coder-agent | verification: pass (30 tests, 0 fail) | status: completed
6: - 2026-02-22T17:15:00+00:00 | step: 2-alignment | agent: coder-agent | verification: pass (32 tests, 0 fail) | note: renamed appliedRecent -> applied_recent | status: completed
7: - 2026-02-22T17:35:00+00:00 | step: 3 | agent: coder-agent | verification: pass (42 tests, 0 fail) | tests: rpc.persistence.test.ts (10), api.test.ts+index.test.ts (32) | status: completed
8: - 2026-02-22T18:30:00+00:00 | step: 4 | agent: coder-agent | verification: pass (46 tests, 0 fail) | tests: rpc.persistence.test.ts (14), api.test.ts+index.test.ts (32) | note: idempotent appendOps with bounded ledger (1000 ops), cursor advancement, dependency checks, mixed ack shape | status: completed
9: 

(End of file - total 9 lines)
</content>

bun test v1.3.9 (cf6cdbbb)

 14 pass
 0 fail
 40 expect() calls
Ran 14 tests across 1 file. [18.00ms]

bun test v1.3.9 (cf6cdbbb)

 32 pass
 0 fail
 103 expect() calls
Ran 32 tests across 2 files. [108.00ms]

task_id: ses_378ed3307ffelmy4HjC2Uxwxp7 (for resuming to continue this task if needed)

<task_result>
Perfect! Now I have a complete picture. Let me compile the analysis:

---

# Step 5 Analysis: OpenCode Durable Outbox Schema + Migration

## 1) Exact Schema Additions Needed

### Create `packages/opencode/src/outbox/outbox.sql.ts`

```typescript
import { sqliteTable, text, integer, index, uniqueIndex } from "drizzle-orm/sqlite-core"
import { SessionTable } from "../session/session.sql"
import { Timestamps } from "@/storage/schema.sql"

// Durable outbox table for event publishing with exactly-once semantics
export const OutboxTable = sqliteTable(
  "outbox",
  {
    id: text().primaryKey(),
    session_id: text()
      .notNull()
      .references(() => SessionTable.id, { onDelete: "cascade" }),
    event_type: text().notNull(),
    payload: text({ mode: "json" }).notNull(),
    published_at: integer(),
    attempts: integer().notNull().$default(() => 0),
    error_message: text(),
    ...Timestamps,
  },
  (table) => [
    index("outbox_session_idx").on(table.session_id),
    uniqueIndex("outbox_id_idx").on(table.id),
  ],
)

// Per-session sync state tracking
export const SessionSyncTable = sqliteTable(
  "session_sync",
  {
    session_id: text()
      .primaryKey()
      .references(() => SessionTable.id, { onDelete: "cascade" }),
    last_synced_at: integer(),
    cursor: text(),
    status: text().notNull().$default(() => "idle"), // idle, syncing, error
    last_error: text(),
    ...Timestamps,
  },
  (table) => [index("session_sync_status_idx").on(table.status)],
)
```

## 2) Naming Consistent with Repo Conventions

| Element | Convention | Applied |
|---------|------------|---------|
| **Table names** | snake_case, lowercase | ✅ `outbox`, `session_sync` |
| **Column names** | snake_case | ✅ `session_id`, `event_type`, `published_at`, `last_synced_at` |
| **FK columns** | `<entity>_id` pattern | ✅ `session_id` |
| **Indexes** | `<table>_<column>_idx` | ✅ `o...

<path>/home/jm/data/code/opencode-trees/fr-capnweb-persistence/packages/opencode/src/share/share.sql.ts</path>
<type>file</type>
<content>1: import { sqliteTable, text } from "drizzle-orm/sqlite-core"
2: import { SessionTable } from "../session/session.sql"
3: import { Timestamps } from "@/storage/schema.sql"
4: 
5: export const SessionShareTable = sqliteTable("session_share", {
6:   session_id: text()
7:     .primaryKey()
8:     .references(() => SessionTable.id, { onDelete: "cascade" }),
9:   id: text().notNull(),
10:   secret: text().notNull(),
11:   url: text().notNull(),
12:   ...Timestamps,
13: })
14: 

(End of file - total 14 lines)
</content>

<path>/home/jm/data/code/opencode-trees/fr-capnweb-persistence/packages/opencode/src/storage/schema.ts</path>
<type>file</type>
<content>1: export { ControlAccountTable } from "../control/control.sql"
2: export { SessionTable, MessageTable, PartTable, TodoTable, PermissionTable } from "../session/session.sql"
3: export { SessionShareTable } from "../share/share.sql"
4: export { ProjectTable } from "../project/project.sql"
5: 

(End of file - total 5 lines)
</content>

<path>/home/jm/data/code/opencode-trees/fr-capnweb-persistence/packages/opencode/drizzle.config.ts</path>
<type>file</type>
<content>1: import { defineConfig } from "drizzle-kit"
2: 
3: export default defineConfig({
4:   dialect: "sqlite",
5:   schema: "./src/**/*.sql.ts",
6:   out: "./migration",
7:   dbCredentials: {
8:     url: "/home/thdxr/.local/share/opencode/opencode.db",
9:   },
10: })
11: 

(End of file - total 11 lines)
</content>

task_id: ses_378ec14edffefKyJSf3B7v3hg3 (for resuming to continue this task if needed)

<task_result>

</task_result>

task_id: ses_378ec14edffefKyJSf3B7v3hg3 (for resuming to continue this task if needed)

<task_result>

</task_result>

 M bun.lock
 M packages/cloudsession/src/api.test.ts
 M packages/cloudsession/src/index.tsx
 M packages/cloudsession/src/rpc-contract.ts
 M packages/cloudsession/src/rpc.ts
 M packages/cloudsession/src/types.ts
 M packages/opencode/src/share/rpc-contract.ts
 M packages/opencode/src/share/share.sql.ts
 M packages/opencode/src/storage/schema.ts
?? do-not-run-tests-from-root
?? packages/cloudsession/src/rpc.persistence.test.ts
?? packages/opencode/migration/20260222204051_share_outbox_prototype/

<path>/home/jm/data/code/opencode-trees/fr-capnweb-persistence/packages/opencode/src/share/share.sql.ts</path>
<type>file</type>
<content>1: import { sqliteTable, text, integer, index } from "drizzle-orm/sqlite-core"
2: import { SessionTable } from "../session/session.sql"
3: import { Timestamps } from "@/storage/schema.sql"
4: 
5: export const SessionShareTable = sqliteTable("session_share", {
6:   session_id: text()
7:     .primaryKey()
8:     .references(() => SessionTable.id, { onDelete: "cascade" }),
9:   id: text().notNull(),
10:   secret: text().notNull(),
11:   url: text().notNull(),
12:   ...Timestamps,
13: })
14: 
15: // Durable outbox for pending share operations with retry metadata
16: // Supports at-least-once delivery with idempotent replay
17: export const ShareOutboxTable = sqliteTable(
18:   "share_outbox",
19:   {
20:     id: text().primaryKey(),
21:     session_id: text()
22:       .notNull()
23:       .references(() => SessionTable.id, { onDelete: "cascade" }),
24:     batch_id: text().notNull(),
25:     seq: integer().notNull(),
26:     op_type: text().notNull(), // "mutation", "compaction", "revoke"
27:     op_data: text({ mode: "json" }).notNull(),
28:     depends_on: text(), // op_id of dependency for causal ordering
29:     ...Timestamps,
30:     // Retry metadata
31:     state: text()
32:       .notNull()
33:       .$default(() => "pending"), // "pending", "reserved", "acked", "failed"
34:     reserved_at: integer(),
35:     attempts: integer()
36:       .notNull()
37:       .$default(() => 0),
38:     next_retry_at: integer(),
39:     error: text(),
40:     // Ack tracking
41:     acked_at: integer(),
42:     server_cursor: text(),
43:   },
44:   (table) => [
45:     index("outbox_session_state_idx").on(table.session_id, table.state),
46:     index("outbox_batch_seq_idx").on(table.batch_id, table.seq),
47:     index("outbox_next_retry_idx").on(table.next_retry_at),
48:   ],
49: )
50: 
51: // Per-session sync state for share replication
52:...

<path>/home/jm/data/code/opencode-trees/fr-capnweb-persistence/packages/opencode/src/storage/schema.ts</path>
<type>file</type>
<content>1: export { ControlAccountTable } from "../control/control.sql"
2: export { SessionTable, MessageTable, PartTable, TodoTable, PermissionTable } from "../session/session.sql"
3: export { SessionShareTable, ShareOutboxTable, ShareSyncStateTable } from "../share/share.sql"
4: export { ProjectTable } from "../project/project.sql"
5: 

(End of file - total 5 lines)
</content>

<path>/home/jm/data/code/opencode-trees/fr-capnweb-persistence/packages/opencode/migration/20260222204051_share_outbox_prototype/migration.sql</path>
<type>file</type>
<content>1: CREATE TABLE `share_outbox` (
2: 	`id` text PRIMARY KEY,
3: 	`session_id` text NOT NULL,
4: 	`batch_id` text NOT NULL,
5: 	`seq` integer NOT NULL,
6: 	`op_type` text NOT NULL,
7: 	`op_data` text NOT NULL,
8: 	`depends_on` text,
9: 	`time_created` integer NOT NULL,
10: 	`time_updated` integer NOT NULL,
11: 	`state` text NOT NULL,
12: 	`reserved_at` integer,
13: 	`attempts` integer NOT NULL,
14: 	`next_retry_at` integer,
15: 	`error` text,
16: 	`acked_at` integer,
17: 	`server_cursor` text,
18: 	CONSTRAINT `fk_share_outbox_session_id_session_id_fk` FOREIGN KEY (`session_id`) REFERENCES `session`(`id`) ON DELETE CASCADE
19: );
20: --> statement-breakpoint
21: CREATE TABLE `share_sync_state` (
22: 	`session_id` text PRIMARY KEY,
23: 	`share_id` text,
24: 	`capability_epoch` text,
25: 	`cursor` text,
26: 	`last_acked_batch_id` text,
27: 	`last_acked_at` integer,
28: 	`time_created` integer NOT NULL,
29: 	`time_updated` integer NOT NULL,
30: 	CONSTRAINT `fk_share_sync_state_session_id_session_id_fk` FOREIGN KEY (`session_id`) REFERENCES `session`(`id`) ON DELETE CASCADE
31: );
32: --> statement-breakpoint
33: CREATE INDEX `outbox_session_state_idx` ON `share_outbox` (`session_id`,`state`);--> statement-breakpoint
34: CREATE INDEX `outbox_batch_seq_idx` ON `share_outbox` (`batch_id`,`seq`);--> statement-breakpoint
35: CREATE INDEX `outbox_next_retry_idx` ON `share_outbox` (`next_retry_at`);--> statement-breakpoint
36: CREATE INDEX `sync_state_share_idx` ON `share_sync_state` (`share_id`);

(End of file - total 36 lines)
</content>

<path>/home/jm/data/code/opencode-trees/fr-capnweb-persistence/.opencode/context/project/project-plan.md</path>
<type>file</type>
<content>1: # Durable Share Replay Prototype - Executable Plan
2: 
3: Status: `ready`
4: Default dedupe strategy: `bounded recent-op window` (selected for v1)
5: 
6: ## Standard Per-Step Operating Procedure
7: 
8: Every step must follow this 10-point checklist:
9: 
10: 1. **Context refresh** - Review the current plan state, prior step outcomes, and any blockers or drift notes.
11: 2. **Dependency check** - Verify all prerequisite steps are complete and no downstream impacts are at risk.
12: 3. **Scoped analysis** - Identify the minimal surface area for changes; document expected vs. out-of-scope work.
13: 4. **Implementation delegation** - Assign coding tasks to appropriate agents with clear boundaries.
14: 5. **Verification** - Run required tests, typechecks, and manual validation before marking complete.
15: 6. **Downstream re-evaluation** - Identify any impact on pending steps; update their scopes if needed.
16: 7. **Plan check-off** - Mark the step complete in this plan document.
17: 8. **Metrics log entry** - Append a line to `project-metrics.md` with timestamp, step, agents, and pass/fail.
18: 9. **Optional escalation** - If blockers emerge that exceed step scope, escalate to project-lead for reassignment or plan amendment.
19: 10. **Readiness decision** - Confirm next step can begin, or document why a pause/rework is required.
20: 
21: ## Execution Loop (run after every step)
22: 1. `analyzer` validates current step outputs and reports blockers, drift, and dependency impact.
23: 2. Project lead updates the next step scope (tighten/expand tests, reorder if needed).
24: 3. Only proceed when verification gates pass, or when an approved fallback path is documented.
25: 
26: ## Dependency Graph
27: - Parallel start: Step 1 + test scaffolding for Steps 3/4/8/9
28: - Then: Steps 2 -> 3 -> 4
29: - In parallel after Step 1: Step 5
30: - The...

<path>/home/jm/data/code/opencode-trees/fr-capnweb-persistence/.opencode/context/project/project-metrics.md</path>
<type>file</type>
<content>1: # Project Metrics
2: 
3: - 2026-02-22T15:52:57+00:00 | task: convert durability plan to executable subagent workflow | agent: project-lead | status: completed
4: - 2026-02-22T16:01:00+00:00 | step: 1 | agent: coder-agent | verification: opencode=pass, cloudsession=blocked | status: completed
5: - 2026-02-22T16:30:00+00:00 | step: 2 | agent: coder-agent | verification: pass (30 tests, 0 fail) | status: completed
6: - 2026-02-22T17:15:00+00:00 | step: 2-alignment | agent: coder-agent | verification: pass (32 tests, 0 fail) | note: renamed appliedRecent -> applied_recent | status: completed
7: - 2026-02-22T17:35:00+00:00 | step: 3 | agent: coder-agent | verification: pass (42 tests, 0 fail) | tests: rpc.persistence.test.ts (10), api.test.ts+index.test.ts (32) | status: completed
8: - 2026-02-22T18:30:00+00:00 | step: 4 | agent: coder-agent | verification: pass (46 tests, 0 fail) | tests: rpc.persistence.test.ts (14), api.test.ts+index.test.ts (32) | note: idempotent appendOps with bounded ledger (1000 ops), cursor advancement, dependency checks, mixed ack shape | status: completed
9: 

(End of file - total 9 lines)
</content>

bun test v1.3.9 (cf6cdbbb)

 22 pass
 0 fail
 127 expect() calls
Ran 22 tests across 1 file. [207.00ms]

task_id: ses_378c77da3ffeeWW82A9Ymdl144 (for resuming to continue this task if needed)

<task_result>

</task_result>

<path>/home/jm/data/code/opencode-trees/fr-capnweb-persistence/.opencode/context/project/project-plan.md</path>
<type>file</type>
<content>1: # Durable Share Replay Prototype - Executable Plan
2: 
3: Status: `ready`
4: Default dedupe strategy: `bounded recent-op window` (selected for v1)
5: 
6: ## Standard Per-Step Operating Procedure
7: 
8: Every step must follow this 10-point checklist:
9: 
10: 1. **Context refresh** - Review the current plan state, prior step outcomes, and any blockers or drift notes.
11: 2. **Dependency check** - Verify all prerequisite steps are complete and no downstream impacts are at risk.
12: 3. **Scoped analysis** - Identify the minimal surface area for changes; document expected vs. out-of-scope work.
13: 4. **Implementation delegation** - Assign coding tasks to appropriate agents with clear boundaries.
14: 5. **Verification** - Run required tests, typechecks, and manual validation before marking complete.
15: 6. **Downstream re-evaluation** - Identify any impact on pending steps; update their scopes if needed.
16: 7. **Plan check-off** - Mark the step complete in this plan document.
17: 8. **Metrics log entry** - Append a line to `project-metrics.md` with timestamp, step, agents, and pass/fail.
18: 9. **Optional escalation** - If blockers emerge that exceed step scope, escalate to project-lead for reassignment or plan amendment.
19: 10. **Readiness decision** - Confirm next step can begin, or document why a pause/rework is required.
20: 
21: ## Execution Loop (run after every step)
22: 1. `analyzer` validates current step outputs and reports blockers, drift, and dependency impact.
23: 2. Project lead updates the next step scope (tighten/expand tests, reorder if needed).
24: 3. Only proceed when verification gates pass, or when an approved fallback path is documented.
25: 
26: ## Dependency Graph
27: - Parallel start: Step 1 + test scaffolding for Steps 3/4/8/9
28: - Then: Steps 2 -> 3 -> 4
29: - In parallel after Step 1: Step 5
30: - The...

<path>/home/jm/data/code/opencode-trees/fr-capnweb-persistence/.opencode/context/project/project-metrics.md</path>
<type>file</type>
<content>1: # Project Metrics
2: 
3: - 2026-02-22T15:52:57+00:00 | task: convert durability plan to executable subagent workflow | agent: project-lead | status: completed
4: - 2026-02-22T16:01:00+00:00 | step: 1 | agent: coder-agent | verification: opencode=pass, cloudsession=blocked | status: completed
5: - 2026-02-22T16:30:00+00:00 | step: 2 | agent: coder-agent | verification: pass (30 tests, 0 fail) | status: completed
6: - 2026-02-22T17:15:00+00:00 | step: 2-alignment | agent: coder-agent | verification: pass (32 tests, 0 fail) | note: renamed appliedRecent -> applied_recent | status: completed
7: - 2026-02-22T17:35:00+00:00 | step: 3 | agent: coder-agent | verification: pass (42 tests, 0 fail) | tests: rpc.persistence.test.ts (10), api.test.ts+index.test.ts (32) | status: completed
8: - 2026-02-22T18:30:00+00:00 | step: 4 | agent: coder-agent | verification: pass (46 tests, 0 fail) | tests: rpc.persistence.test.ts (14), api.test.ts+index.test.ts (32) | note: idempotent appendOps with bounded ledger (1000 ops), cursor advancement, dependency checks, mixed ack shape | status: completed
9: - 2026-02-22T20:45:00+00:00 | step: 5 | agent: coder-agent | verification: pass (22 tests, 0 fail) | tests: json-migration.test.ts | note: migration `share_outbox_prototype` generated | status: completed
10: 

(End of file - total 10 lines)
</content>

task_id: ses_378c6d93affeSvxc9NeFJV2AqZ (for resuming to continue this task if needed)

<task_result>
Based on my analysis of the codebase, here's a comprehensive implementation plan for the outbox repository API persistence layer:

---

## 1) Exact Insertion Points & Helper Module Decision

### **Recommendation: Create a dedicated helper module**

**Location:** `packages/opencode/src/share/outbox.ts`

**Rationale:**
- The current in-memory queue in `share-next.ts` (lines 121-164) is ~44 lines and will be replaced
- Outbox operations (enqueue, reserve, ack, retry, recover) are complex, cross-cutting concerns
- Database transaction patterns in this codebase favor single-purpose modules (e.g., `session/retry.ts`, `session/compaction.ts`)
- Share module is already growing; extracting outbox logic improves separation of concerns
- Makes testing easier with isolated database operations
- Follows existing patterns: `Database.use()` for simple queries, `Database.transaction()` for multi-statement operations

### **Integration Points in `share-next.ts`:**

| Current Code | Replacement |
|-------------|-------------|
| Lines 30-76: `init()` with bus subscriptions | Add outbox recovery after subscription setup |
| Lines 121-164: In-memory `queue` Map and `sync()` function | Replace with `Outbox.enqueue()` calls |
| Lines 78-109: `create()` function | Wrap share creation with transaction + outbox compaction op |
| Lines 167-182: `remove()` function | Wrap with transaction + outbox revoke op |

---

## 2) Proposed Function Signatures

### **File: `packages/opencode/src/share/outbox.ts`**

```typescript
import { Database, eq, and, lt, asc, desc, inArray } from "@/storage/db"
import { ShareOutboxTable, ShareSyncStateTable } from "./share.sql"
import { Identifier } from "@/id/id"
import { Log } from "@/util/log"
import type * as SDK from "@opencode-ai/sdk/v2"

export namespace Outbox {
  const log = Log.create({ service: "share-outbox" })

  // === Core Operations ===

  /**
   * ...

<path>/home/jm/data/code/opencode-trees/fr-capnweb-persistence/packages/opencode/src/share/share-next.ts</path>
<type>file</type>
<content>1: import { Bus } from "@/bus"
2: import { Config } from "@/config/config"
3: import { newHttpBatchRpcSession } from "capnweb"
4: import { ulid } from "ulid"
5: import { Provider } from "@/provider/provider"
6: import { Session } from "@/session"
7: import { MessageV2 } from "@/session/message-v2"
8: import { Database, eq } from "@/storage/db"
9: import { SessionShareTable } from "./share.sql"
10: import { Log } from "@/util/log"
11: import type * as SDK from "@opencode-ai/sdk/v2"
12: import type { ShareRpc, SyncData, SyncInfo } from "./rpc-contract"
13: 
14: export namespace ShareNext {
15:   const log = Log.create({ service: "share-next" })
16: 
17:   export async function url() {
18:     return Config.get().then((x) => x.enterprise?.url ?? "https://opencode.j9xym.com")
19:   }
20: 
21:   const disabled = process.env["OPENCODE_DISABLE_SHARE"] === "true" || process.env["OPENCODE_DISABLE_SHARE"] === "1"
22:   const transport = process.env["OPENCODE_SHARE_TRANSPORT"] === "rpc" ? "rpc" : "http"
23:   const rpcKey = process.env["OPENCODE_SHARE_RPC_KEY"]
24: 
25:   function rpcHeaders() {
26:     if (!rpcKey) return undefined
27:     return { "x-opencode-share-key": rpcKey }
28:   }
29: 
30:   export async function init() {
31:     if (disabled) return
32:     Bus.subscribe(Session.Event.Updated, async (evt) => {
33:       await sync(evt.properties.info.id, [
34:         {
35:           type: "session",
36:           data: evt.properties.info,
37:         },
38:       ])
39:     })
40:     Bus.subscribe(MessageV2.Event.Updated, async (evt) => {
41:       await sync(evt.properties.info.sessionID, [
42:         {
43:           type: "message",
44:           data: evt.properties.info,
45:         },
46:       ])
47:       if (evt.properties.info.role === "user") {
48:         await sync(evt.properties.info.sessionID, [
49:           {
5...

No files found

<path>/home/jm/data/code/opencode-trees/fr-capnweb-persistence/packages/opencode/test/storage/json-migration.test.ts</path>
<type>file</type>
<content>1: import { describe, test, expect, beforeEach, afterEach } from "bun:test"
2: import { Database } from "bun:sqlite"
3: import { drizzle } from "drizzle-orm/bun-sqlite"
4: import { migrate } from "drizzle-orm/bun-sqlite/migrator"
5: import path from "path"
6: import fs from "fs/promises"
7: import { readFileSync, readdirSync } from "fs"
8: import { JsonMigration } from "../../src/storage/json-migration"
9: import { Global } from "../../src/global"
10: import { ProjectTable } from "../../src/project/project.sql"
11: import { SessionTable, MessageTable, PartTable, TodoTable, PermissionTable } from "../../src/session/session.sql"
12: import { SessionShareTable } from "../../src/share/share.sql"
13: 
14: // Test fixtures
15: const fixtures = {
16:   project: {
17:     id: "proj_test123abc",
18:     name: "Test Project",
19:     worktree: "/test/path",
20:     vcs: "git" as const,
21:     sandboxes: [],
22:   },
23:   session: {
24:     id: "ses_test456def",
25:     projectID: "proj_test123abc",
26:     slug: "test-session",
27:     directory: "/test/path",
28:     title: "Test Session",
29:     version: "1.0.0",
30:     time: { created: 1700000000000, updated: 1700000001000 },
31:   },
32:   message: {
33:     id: "msg_test789ghi",
34:     sessionID: "ses_test456def",
35:     role: "user" as const,
36:     agent: "default",
37:     model: { providerID: "openai", modelID: "gpt-4" },
38:     time: { created: 1700000000000 },
39:   },
40:   part: {
41:     id: "prt_testabc123",
42:     messageID: "msg_test789ghi",
43:     sessionID: "ses_test456def",
44:     type: "text" as const,
45:     text: "Hello, world!",
46:   },
47: }
48: 
49: // Helper to create test storage directory structure
50: async function setupStorageDir() {
51:   const storageDir = path.join(Global.Path.data, "storage")
52:   await fs.rm(storageDir, { recur...

<path>/home/jm/data/code/opencode-trees/fr-capnweb-persistence/packages/opencode/src/storage/db.ts</path>
<type>file</type>
<content>1: import { Database as BunDatabase } from "bun:sqlite"
2: import { drizzle, type SQLiteBunDatabase } from "drizzle-orm/bun-sqlite"
3: import { migrate } from "drizzle-orm/bun-sqlite/migrator"
4: import { type SQLiteTransaction } from "drizzle-orm/sqlite-core"
5: export * from "drizzle-orm"
6: import { Context } from "../util/context"
7: import { lazy } from "../util/lazy"
8: import { Global } from "../global"
9: import { Log } from "../util/log"
10: import { NamedError } from "@opencode-ai/util/error"
11: import z from "zod"
12: import path from "path"
13: import { readFileSync, readdirSync, existsSync } from "fs"
14: import * as schema from "./schema"
15: 
16: declare const OPENCODE_MIGRATIONS: { sql: string; timestamp: number }[] | undefined
17: 
18: export const NotFoundError = NamedError.create(
19:   "NotFoundError",
20:   z.object({
21:     message: z.string(),
22:   }),
23: )
24: 
25: const log = Log.create({ service: "db" })
26: 
27: export namespace Database {
28:   export const Path = path.join(Global.Path.data, "opencode.db")
29:   type Schema = typeof schema
30:   export type Transaction = SQLiteTransaction<"sync", void, Schema>
31: 
32:   type Client = SQLiteBunDatabase<Schema>
33: 
34:   type Journal = { sql: string; timestamp: number }[]
35: 
36:   function time(tag: string) {
37:     const match = /^(\d{4})(\d{2})(\d{2})(\d{2})(\d{2})(\d{2})/.exec(tag)
38:     if (!match) return 0
39:     return Date.UTC(
40:       Number(match[1]),
41:       Number(match[2]) - 1,
42:       Number(match[3]),
43:       Number(match[4]),
44:       Number(match[5]),
45:       Number(match[6]),
46:     )
47:   }
48: 
49:   function migrations(dir: string): Journal {
50:     const dirs = readdirSync(dir, { withFileTypes: true })
51:       .filter((entry) => entry.isDirectory())
52:       .map((entry) => entry.name)
53: 
54:     const sql = ...

<path>/home/jm/data/code/opencode-trees/fr-capnweb-persistence/packages/opencode/test/preload.ts</path>
<type>file</type>
<content>1: // IMPORTANT: Set env vars BEFORE any imports from src/ directory
2: // xdg-basedir reads env vars at import time, so we must set these first
3: import os from "os"
4: import path from "path"
5: import fs from "fs/promises"
6: import fsSync from "fs"
7: import { afterAll } from "bun:test"
8: 
9: // Set XDG env vars FIRST, before any src/ imports
10: const dir = path.join(os.tmpdir(), "opencode-test-data-" + process.pid)
11: await fs.mkdir(dir, { recursive: true })
12: afterAll(() => {
13:   fsSync.rmSync(dir, { recursive: true, force: true })
14: })
15: 
16: process.env["XDG_DATA_HOME"] = path.join(dir, "share")
17: process.env["XDG_CACHE_HOME"] = path.join(dir, "cache")
18: process.env["XDG_CONFIG_HOME"] = path.join(dir, "config")
19: process.env["XDG_STATE_HOME"] = path.join(dir, "state")
20: process.env["OPENCODE_MODELS_PATH"] = path.join(import.meta.dir, "tool", "fixtures", "models-api.json")
21: 
22: // Set test home directory to isolate tests from user's actual home directory
23: // This prevents tests from picking up real user configs/skills from ~/.claude/skills
24: const testHome = path.join(dir, "home")
25: await fs.mkdir(testHome, { recursive: true })
26: process.env["OPENCODE_TEST_HOME"] = testHome
27: 
28: // Set test managed config directory to isolate tests from system managed settings
29: const testManagedConfigDir = path.join(dir, "managed")
30: process.env["OPENCODE_TEST_MANAGED_CONFIG_DIR"] = testManagedConfigDir
31: 
32: // Write the cache version file to prevent global/index.ts from clearing the cache
33: const cacheDir = path.join(dir, "cache", "opencode")
34: await fs.mkdir(cacheDir, { recursive: true })
35: await fs.writeFile(path.join(cacheDir, "version"), "14")
36: 
37: // Clear provider env vars to ensure clean test state
38: delete process.env["ANTHROPIC_API_KEY"]
39: delete process.env["OPENAI_API_KEY"]
40...

<path>/home/jm/data/code/opencode-trees/fr-capnweb-persistence/packages/opencode/src/session/session.sql.ts</path>
<type>file</type>
<content>1: import { sqliteTable, text, integer, index, primaryKey } from "drizzle-orm/sqlite-core"
2: import { ProjectTable } from "../project/project.sql"
3: import type { MessageV2 } from "./message-v2"
4: import type { Snapshot } from "@/snapshot"
5: import type { PermissionNext } from "@/permission/next"
6: import { Timestamps } from "@/storage/schema.sql"
7: 
8: type PartData = Omit<MessageV2.Part, "id" | "sessionID" | "messageID">
9: type InfoData = Omit<MessageV2.Info, "id" | "sessionID">
10: 
11: export const SessionTable = sqliteTable(
12:   "session",
13:   {
14:     id: text().primaryKey(),
15:     project_id: text()
16:       .notNull()
17:       .references(() => ProjectTable.id, { onDelete: "cascade" }),
18:     parent_id: text(),
19:     slug: text().notNull(),
20:     directory: text().notNull(),
21:     title: text().notNull(),
22:     version: text().notNull(),
23:     share_url: text(),
24:     summary_additions: integer(),
25:     summary_deletions: integer(),
26:     summary_files: integer(),
27:     summary_diffs: text({ mode: "json" }).$type<Snapshot.FileDiff[]>(),
28:     revert: text({ mode: "json" }).$type<{ messageID: string; partID?: string; snapshot?: string; diff?: string }>(),
29:     permission: text({ mode: "json" }).$type<PermissionNext.Ruleset>(),
30:     ...Timestamps,
31:     time_compacting: integer(),
32:     time_archived: integer(),
33:   },
34:   (table) => [index("session_project_idx").on(table.project_id), index("session_parent_idx").on(table.parent_id)],
35: )
36: 
37: export const MessageTable = sqliteTable(
38:   "message",
39:   {
40:     id: text().primaryKey(),
41:     session_id: text()
42:       .notNull()
43:       .references(() => SessionTable.id, { onDelete: "cascade" }),
44:     ...Timestamps,
45:     data: text({ mode: "json" }).notNull().$type<InfoData>(),
46:   },
47:   (tabl...

<path>/home/jm/data/code/opencode-trees/fr-capnweb-persistence/packages/opencode/src/project/project.sql.ts</path>
<type>file</type>
<content>1: import { sqliteTable, text, integer } from "drizzle-orm/sqlite-core"
2: import { Timestamps } from "@/storage/schema.sql"
3: 
4: export const ProjectTable = sqliteTable("project", {
5:   id: text().primaryKey(),
6:   worktree: text().notNull(),
7:   vcs: text(),
8:   name: text(),
9:   icon_url: text(),
10:   icon_color: text(),
11:   ...Timestamps,
12:   time_initialized: integer(),
13:   sandboxes: text({ mode: "json" }).notNull().$type<string[]>(),
14:   commands: text({ mode: "json" }).$type<{ start?: string }>(),
15: })
16: 

(End of file - total 16 lines)
</content>

<path>/home/jm/data/code/opencode-trees/fr-capnweb-persistence/packages/opencode/src/id/id.ts</path>
<type>file</type>
<content>1: import z from "zod"
2: import { randomBytes } from "crypto"
3: 
4: export namespace Identifier {
5:   const prefixes = {
6:     session: "ses",
7:     message: "msg",
8:     permission: "per",
9:     question: "que",
10:     user: "usr",
11:     part: "prt",
12:     pty: "pty",
13:     tool: "tool",
14:   } as const
15: 
16:   export function schema(prefix: keyof typeof prefixes) {
17:     return z.string().startsWith(prefixes[prefix])
18:   }
19: 
20:   const LENGTH = 26
21: 
22:   // State for monotonic ID generation
23:   let lastTimestamp = 0
24:   let counter = 0
25: 
26:   export function ascending(prefix: keyof typeof prefixes, given?: string) {
27:     return generateID(prefix, false, given)
28:   }
29: 
30:   export function descending(prefix: keyof typeof prefixes, given?: string) {
31:     return generateID(prefix, true, given)
32:   }
33: 
34:   function generateID(prefix: keyof typeof prefixes, descending: boolean, given?: string): string {
35:     if (!given) {
36:       return create(prefix, descending)
37:     }
38: 
39:     if (!given.startsWith(prefixes[prefix])) {
40:       throw new Error(`ID ${given} does not start with ${prefixes[prefix]}`)
41:     }
42:     return given
43:   }
44: 
45:   function randomBase62(length: number): string {
46:     const chars = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
47:     let result = ""
48:     const bytes = randomBytes(length)
49:     for (let i = 0; i < length; i++) {
50:       result += chars[bytes[i] % 62]
51:     }
52:     return result
53:   }
54: 
55:   export function create(prefix: keyof typeof prefixes, descending: boolean, timestamp?: number): string {
56:     const currentTimestamp = timestamp ?? Date.now()
57: 
58:     if (currentTimestamp !== lastTimestamp) {
59:       lastTimestamp = currentTimestamp
60:       counter = 0
61:     }
62:     co...

task_id: ses_378c4b92dffet4wS1qSCMos8j4 (for resuming to continue this task if needed)

<task_result>

</task_result>

 M packages/opencode/src/share/rpc-contract.ts
 M packages/opencode/src/share/share.sql.ts
?? packages/opencode/src/share/share-outbox.ts
?? packages/opencode/test/share/

<path>/home/jm/data/code/opencode-trees/fr-capnweb-persistence/packages/opencode/src/share/share-outbox.ts</path>
<type>file</type>
<content>1: import { ulid } from "ulid"
2: import { eq, and, asc, lte, sql } from "@/storage/db"
3: import { Database } from "@/storage/db"
4: import { ShareOutboxTable, ShareSyncStateTable } from "./share.sql"
5: import { Log } from "@/util/log"
6: 
7: export namespace ShareOutbox {
8:   const log = Log.create({ service: "share-outbox" })
9: 
10:   export type OpType = "mutation" | "compaction" | "revoke"
11: 
12:   export type OpData = Record<string, unknown>
13: 
14:   export type EnqueueOpts = {
15:     session_id: string
16:     ops: Array<{
17:       op_type: OpType
18:       op_data: OpData
19:       depends_on?: string
20:     }>
21:     batch_id?: string
22:   }
23: 
24:   export type OutboxRow = {
25:     id: string
26:     session_id: string
27:     batch_id: string
28:     seq: number
29:     op_type: OpType
30:     op_data: OpData
31:     depends_on: string | null
32:     state: "pending" | "reserved" | "acked" | "failed"
33:     reserved_at: number | null
34:     attempts: number
35:     next_retry_at: number | null
36:     error: string | null
37:     acked_at: number | null
38:     server_cursor: string | null
39:     time_created: number
40:     time_updated: number
41:   }
42: 
43:   export type ReservedBatch = {
44:     batch_id: string
45:     session_id: string
46:     ops: OutboxRow[]
47:   }
48: 
49:   const STALE_RESERVED_MS = 5 * 60 * 1000 // 5 minutes
50:   const RETRY_BASE_DELAY_MS = 1000
51:   const MAX_RETRY_DELAY_MS = 60 * 1000
52: 
53:   export function enqueue(opts: EnqueueOpts): string {
54:     const batch_id = opts.batch_id ?? ulid()
55: 
56:     Database.use((db) => {
57:       for (let i = 0; i < opts.ops.length; i++) {
58:         const op = opts.ops[i]
59:         db.insert(ShareOutboxTable)
60:           .values({
61:             id: ulid(),
62:             session_id: opts.session_id,
63:        ...

<path>/home/jm/data/code/opencode-trees/fr-capnweb-persistence/packages/opencode/test/share/share-outbox.test.ts</path>
<type>file</type>
<content>1: import { describe, test, expect, beforeEach } from "bun:test"
2: import { Database } from "bun:sqlite"
3: import { drizzle } from "drizzle-orm/bun-sqlite"
4: import { migrate } from "drizzle-orm/bun-sqlite/migrator"
5: import path from "path"
6: import { readFileSync, readdirSync } from "fs"
7: import { ShareOutbox } from "../../src/share/share-outbox"
8: import { ShareOutboxTable, ShareSyncStateTable } from "../../src/share/share.sql"
9: import { eq, and } from "drizzle-orm"
10: 
11: function createTestDb() {
12:   const sqlite = new Database(":memory:")
13:   sqlite.exec("PRAGMA foreign_keys = ON")
14: 
15:   const dir = path.join(import.meta.dirname, "../../migration")
16:   const entries = readdirSync(dir, { withFileTypes: true })
17:   const migrations = entries
18:     .filter((entry) => entry.isDirectory())
19:     .map((entry) => ({
20:       sql: readFileSync(path.join(dir, entry.name, "migration.sql"), "utf-8"),
21:       timestamp: Number(entry.name.split("_")[0]),
22:     }))
23:     .sort((a, b) => a.timestamp - b.timestamp)
24:   migrate(drizzle({ client: sqlite }), migrations)
25: 
26:   return sqlite
27: }
28: 
29: describe("ShareOutbox", () => {
30:   let sqlite: Database
31: 
32:   beforeEach(() => {
33:     sqlite = createTestDb()
34:   })
35: 
36:   describe("enqueue", () => {
37:     test("creates durable rows with batch_id and seq", () => {
38:       const batch_id = ShareOutbox.enqueue({
39:         session_id: "session-123",
40:         ops: [
41:           { op_type: "mutation", op_data: { key: "value1" } },
42:           { op_type: "mutation", op_data: { key: "value2" } },
43:         ],
44:       })
45: 
46:       expect(batch_id).toBeDefined()
47:       expect(batch_id.length).toBeGreaterThan(0)
48: 
49:       const db = drizzle({ client: sqlite })
50:       const rows = db.select().from(Sha...

<path>/home/jm/data/code/opencode-trees/fr-capnweb-persistence/.opencode/context/project/project-plan.md</path>
<type>file</type>
<content>1: # Durable Share Replay Prototype - Executable Plan
2: 
3: Status: `ready`
4: Default dedupe strategy: `bounded recent-op window` (selected for v1)
5: 
6: ## Standard Per-Step Operating Procedure
7: 
8: Every step must follow this 10-point checklist:
9: 
10: 1. **Context refresh** - Review the current plan state, prior step outcomes, and any blockers or drift notes.
11: 2. **Dependency check** - Verify all prerequisite steps are complete and no downstream impacts are at risk.
12: 3. **Scoped analysis** - Identify the minimal surface area for changes; document expected vs. out-of-scope work.
13: 4. **Implementation delegation** - Assign coding tasks to appropriate agents with clear boundaries.
14: 5. **Verification** - Run required tests, typechecks, and manual validation before marking complete.
15: 6. **Downstream re-evaluation** - Identify any impact on pending steps; update their scopes if needed.
16: 7. **Plan check-off** - Mark the step complete in this plan document.
17: 8. **Metrics log entry** - Append a line to `project-metrics.md` with timestamp, step, agents, and pass/fail.
18: 9. **Optional escalation** - If blockers emerge that exceed step scope, escalate to project-lead for reassignment or plan amendment.
19: 10. **Readiness decision** - Confirm next step can begin, or document why a pause/rework is required.
20: 
21: ## Execution Loop (run after every step)
22: 1. `analyzer` validates current step outputs and reports blockers, drift, and dependency impact.
23: 2. Project lead updates the next step scope (tighten/expand tests, reorder if needed).
24: 3. Only proceed when verification gates pass, or when an approved fallback path is documented.
25: 
26: ## Dependency Graph
27: - Parallel start: Step 1 + test scaffolding for Steps 3/4/8/9
28: - Then: Steps 2 -> 3 -> 4
29: - In parallel after Step 1: Step 5
30: - The...

<path>/home/jm/data/code/opencode-trees/fr-capnweb-persistence/.opencode/context/project/project-metrics.md</path>
<type>file</type>
<content>1: # Project Metrics
2: 
3: - 2026-02-22T15:52:57+00:00 | task: convert durability plan to executable subagent workflow | agent: project-lead | status: completed
4: - 2026-02-22T16:01:00+00:00 | step: 1 | agent: coder-agent | verification: opencode=pass, cloudsession=blocked | status: completed
5: - 2026-02-22T16:30:00+00:00 | step: 2 | agent: coder-agent | verification: pass (30 tests, 0 fail) | status: completed
6: - 2026-02-22T17:15:00+00:00 | step: 2-alignment | agent: coder-agent | verification: pass (32 tests, 0 fail) | note: renamed appliedRecent -> applied_recent | status: completed
7: - 2026-02-22T17:35:00+00:00 | step: 3 | agent: coder-agent | verification: pass (42 tests, 0 fail) | tests: rpc.persistence.test.ts (10), api.test.ts+index.test.ts (32) | status: completed
8: - 2026-02-22T18:30:00+00:00 | step: 4 | agent: coder-agent | verification: pass (46 tests, 0 fail) | tests: rpc.persistence.test.ts (14), api.test.ts+index.test.ts (32) | note: idempotent appendOps with bounded ledger (1000 ops), cursor advancement, dependency checks, mixed ack shape | status: completed
9: - 2026-02-22T20:45:00+00:00 | step: 5 | agent: coder-agent | verification: pass (22 tests, 0 fail) | tests: json-migration.test.ts | note: migration `share_outbox_prototype` generated | status: completed
10: 

(End of file - total 10 lines)
</content>

bun test v1.3.9 (cf6cdbbb)

test/share/share-outbox.test.ts:
66 |             op_data: op.op_data,
67 |             depends_on: op.depends_on,
68 |             state: "pending",
69 |             attempts: 0,
70 |           })
71 |           .run()
                ^
SQLiteError: FOREIGN KEY constraint failed
      at #run (bun:sqlite:185:20)
      at <anonymous> (/home/jm/data/code/opencode-trees/fr-capnweb-persistence/packages/opencode/src/share/share-outbox.ts:71:12)
      at run (node:async_hooks:62:22)
      at use (/home/jm/data/code/opencode-trees/fr-capnweb-persistence/packages/opencode/src/storage/db.ts:111:28)
      at enqueue (/home/jm/data/code/opencode-trees/fr-capnweb-persistence/packages/opencode/src/share/share-outbox.ts:56:14)
      at <anonymous> (/home/jm/data/code/opencode-trees/fr-capnweb-persistence/packages/opencode/test/share/share-outbox.test.ts:38:36)
(fail) ShareOutbox > enqueue > creates durable rows with batch_id and seq [8.29ms]
66 |             op_data: op.op_data,
67 |             depends_on: op.depends_on,
68 |             state: "pending",
69 |             attempts: 0,
70 |           })
71 |           .run()
                ^
SQLiteError: FOREIGN KEY constraint failed
      at #run (bun:sqlite:185:20)
      at <anonymous> (/home/jm/data/code/opencode-trees/fr-capnweb-persistence/packages/opencode/src/share/share-outbox.ts:71:12)
      at run (node:async_hooks:62:22)
      at use (/home/jm/data/code/opencode-trees/fr-capnweb-persistence/packages/opencode/src/storage/db.ts:111:28)
      at enqueue (/home/jm/data/code/opencode-trees/fr-capnweb-persistence/packages/opencode/src/share/share-outbox.ts:56:14)
      at <anonymous> (/home/jm/data/code/opencode-trees/fr-capnweb-persistence/packages/opencode/test/share/share-outbox.test.ts:64:36)
(fail) ShareOutbox > enqueue > uses explicit batch_id when provided [1.49ms]
66 |             op_data: op.op_data,
67 |             depends_on: op.depends_on,
68 |             state: "pending",
69 |    ...

$ tsgo --noEmit

task_id: ses_378bc1333ffe2XTBShIgOSXK14 (for resuming to continue this task if needed)

<task_result>

</task_result>

?? packages/opencode/test/share/share-outbox.test.ts

<path>/home/jm/data/code/opencode-trees/fr-capnweb-persistence/packages/opencode/test/share/share-outbox.test.ts</path>
<type>file</type>
<content>1: import { describe, test, expect, beforeEach } from "bun:test"
2: import { Database } from "@/storage/db"
3: import { ShareOutbox } from "../../src/share/share-outbox"
4: import { ShareOutboxTable, ShareSyncStateTable } from "../../src/share/share.sql"
5: import { SessionTable } from "../../src/session/session.sql"
6: import { ProjectTable } from "../../src/project/project.sql"
7: import { eq, and } from "drizzle-orm"
8: 
9: function setupTestSession(session_id: string) {
10:   const project_id = `project-${session_id}`
11: 
12:   Database.use((db) => {
13:     // Insert minimal project row
14:     db.insert(ProjectTable)
15:       .values({
16:         id: project_id,
17:         worktree: "/tmp/test",
18:         sandboxes: [],
19:       })
20:       .run()
21: 
22:     // Insert minimal session row
23:     db.insert(SessionTable)
24:       .values({
25:         id: session_id,
26:         project_id,
27:         slug: "test",
28:         directory: "/tmp/test",
29:         title: "Test Session",
30:         version: "1",
31:       })
32:       .run()
33:   })
34: }
35: 
36: describe("ShareOutbox", () => {
37:   beforeEach(() => {
38:     // Clean outbox and sync state tables between tests
39:     Database.use((db) => {
40:       db.delete(ShareOutboxTable).run()
41:       db.delete(ShareSyncStateTable).run()
42:       db.delete(SessionTable).run()
43:       db.delete(ProjectTable).run()
44:     })
45:   })
46: 
47:   describe("enqueue", () => {
48:     test("creates durable rows with batch_id and seq", () => {
49:       const session_id = "session-123"
50:       setupTestSession(session_id)
51: 
52:       const batch_id = ShareOutbox.enqueue({
53:         session_id,
54:         ops: [
55:           { op_type: "mutation", op_data: { key: "value1" } },
56:           { op_type: "mutation", op_data: { key: "value2" } },...

<path>/home/jm/data/code/opencode-trees/fr-capnweb-persistence/packages/opencode/src/storage/schema.sql.ts</path>
<type>file</type>
<content>1: import { integer } from "drizzle-orm/sqlite-core"
2: 
3: export const Timestamps = {
4:   time_created: integer()
5:     .notNull()
6:     .$default(() => Date.now()),
7:   time_updated: integer()
8:     .notNull()
9:     .$onUpdate(() => Date.now()),
10: }
11: 

(End of file - total 11 lines)
</content>

bun test v1.3.9 (cf6cdbbb)

 14 pass
 0 fail
 42 expect() calls
Ran 14 tests across 1 file. [156.00ms]

$ tsgo --noEmit

2026-02-22T21:36:04+00:00

task_id: ses_378b7e5c9ffegMDuKgWBJz2Pxf (for resuming to continue this task if needed)

<task_result>
Based on my analysis of the current implementation and project plan, here's the post-Step 6 re-evaluation:

---

## 1) Go/No-Go Decision for Step 7

**✅ GO - Proceed to Step 7**

**Readiness Assessment:**
- ✅ RPC contract fully defined (Steps 1-4 complete): `redeemShare`, `appendOps`, `revokeCapability` implemented in cloudsession
- ✅ Outbox persistence layer complete (Step 5): Tables with retry metadata and sync state tracking
- ✅ Outbox repository API complete (Step 6): `enqueue`, `reserve`, `ack`, `retry`, `recover` functions tested
- ✅ Clear separation of concerns: Outbox is transport-agnostic, ready to replace in-memory queue
- ✅ HTTP fallback path can remain unchanged (only RPC path needs outbox integration)

**Prerequisites Verified:**
- `SyncData` types in `rpc-contract.ts` match current `share-next.ts` usage
- `DurableOp` and `OpAck` types provide necessary envelope for durable replay
- Outbox schema supports batch_id/seq ordering required for causal consistency

---

## 2) Minimal Wiring Checklist

### File: `packages/opencode/src/share/share-next.ts`

**Replace lines 121-165 (in-memory queue + sync function):**

| Action | Change |
|--------|--------|
| Import | Add `import { ShareOutbox } from "./share-outbox"` |
| Remove | `const queue = new Map<string, { timeout: NodeJS.Timeout; data: Map<string, Data> }>()` |
| Replace `sync()` | Replace entire `sync(sessionID, data)` function with: `ShareOutbox.enqueue({ session_id: sessionID, ops: convertToOps(data) })` |
| Add converter | Add helper function `convertToOps(data: Data[])` → maps SyncData to outbox ops format |
| Add flusher | Add new async function `flushOutbox(sessionID: string)` that: 1) calls `ShareOutbox.reserve()`, 2) calls `redeemShare()` (RPC only), 3) calls `appendOps()` with converted ops, 4) calls `ShareOutbox.ack()` or `retry()` |
| Modify `create()` | After fullSync (line 107), add: `flus...

<path>/home/jm/data/code/opencode-trees/fr-capnweb-persistence/.opencode/context/project/project-plan.md</path>
<type>file</type>
<content>54: - [x] **Step 4 - Idempotent appendOps + cursor advancement**
55:   - Research (`analyzer`): identify mutation apply path and cursor update boundary.
56:   - Code (`coder-agent`): add `appendOps(shareID, secret, capabilityEpoch, ops)` in `packages/cloudsession/src/rpc.ts`; duplicate detection via bounded ledger, dependency checks, apply-once cursor advance, structured ack.
57:   - Verify (`coder-agent`): extend `rpc.persistence.test.ts` with replay-no-double-apply, dependency enforcement, mixed ack shape.
58:   - Re-evaluate (`analyzer`): confirm exactly-once effect with bounded dedupe assumptions documented.
59: 
60: - [x] **Step 5 - Opencode durable outbox schema + migration**
61:   - Research (`analyzer`): inspect existing share schema and migration generation flow.
62:   - Code (`coder-agent`): extend `packages/opencode/src/share/share.sql.ts` with outbox + per-session sync state, export from `packages/opencode/src/storage/schema.ts`, generate migration via `bun --cwd packages/opencode run db generate --name share_outbox_prototype`.
63:   - Verify (`coder-agent`): run `bun --cwd packages/opencode test --preload ./test/preload.ts test/storage/json-migration.test.ts`.
64:   - Re-evaluate (`analyzer`): verify migration safety and no breakage to existing storage tests.
65: 
66: - [x] **Step 6 - Outbox repository API (opencode)**
67:   - Research (`analyzer`): define minimal persistence API boundaries in share module.
68:   - Code (`coder-agent`): implement enqueue/reserve/ack/retry/recover helpers in `packages/opencode/src/share/share-next.ts` (or sibling helper) with deterministic `batch_id` + `seq`.
69:   - Verify (`coder-agent`): add `packages/opencode/test/share/share-outbox.test.ts` for durable enqueue, reserve/ack transitions, retry scheduling.
70:   - Re-evaluate (`analyzer`): verify queue semantics independent from tra...

<path>/home/jm/data/code/opencode-trees/fr-capnweb-persistence/.opencode/context/project/project-metrics.md</path>
<type>file</type>
<content>1: # Project Metrics
2: 
3: - 2026-02-22T15:52:57+00:00 | task: convert durability plan to executable subagent workflow | agent: project-lead | status: completed
4: - 2026-02-22T16:01:00+00:00 | step: 1 | agent: coder-agent | verification: opencode=pass, cloudsession=blocked | status: completed
5: - 2026-02-22T16:30:00+00:00 | step: 2 | agent: coder-agent | verification: pass (30 tests, 0 fail) | status: completed
6: - 2026-02-22T17:15:00+00:00 | step: 2-alignment | agent: coder-agent | verification: pass (32 tests, 0 fail) | note: renamed appliedRecent -> applied_recent | status: completed
7: - 2026-02-22T17:35:00+00:00 | step: 3 | agent: coder-agent | verification: pass (42 tests, 0 fail) | tests: rpc.persistence.test.ts (10), api.test.ts+index.test.ts (32) | status: completed
8: - 2026-02-22T18:30:00+00:00 | step: 4 | agent: coder-agent | verification: pass (46 tests, 0 fail) | tests: rpc.persistence.test.ts (14), api.test.ts+index.test.ts (32) | note: idempotent appendOps with bounded ledger (1000 ops), cursor advancement, dependency checks, mixed ack shape | status: completed
9: - 2026-02-22T20:45:00+00:00 | step: 5 | agent: coder-agent | verification: pass (22 tests, 0 fail) | tests: json-migration.test.ts | note: migration `share_outbox_prototype` generated | status: completed
10: - 2026-02-22T21:36:04+00:00 | step: 6 | agent: coder-agent | verification: pass (share-outbox.test.ts 14 pass, 0 fail; typecheck pass) | status: completed
11: 

(End of file - total 11 lines)
</content>

task_id: ses_378606bdbffeWjaa0Ai0RYbCey (for resuming to continue this task if needed)

<task_result>
## Technical Review: Durable Share Replay with capnweb RPC

Based on my analysis of the codebase and capnweb research, here's my comprehensive review:

### 1. capnweb-Focused Analysis

**Key capnweb Characteristics Affecting Durability:**
```
┌─────────────────────────────────────────────────────────────┐
│                   capnweb HTTP Batch Behavior                │
├─────────────────────────────────────────────────────────────┤
│  Client Side (newHttpBatchRpcSession)                       │
│  ├─ Batch accumulates calls until await                     │
│  ├─ Single HTTP POST with newline-separated JSON            │
│  ├─ No automatic retry on transport failure                 │
│  ├─ Partial failure = entire batch fails                    │
│  └─ Network timeout → lost batch (no confirmation)          │
├─────────────────────────────────────────────────────────────┤
│  Server Side (newWorkersRpcResponse)                        │
│  ├─ Processes batch sequentially on receipt                 │
│  ├─ Each call evaluated independently                       │
│  ├─ Exceptions in one call don't stop others                │
│  ├─ BUT: HTTP-level failure loses entire batch              │
│  └─ Response contains success/failure per call              │
└─────────────────────────────────────────────────────────────┘
```

**Critical Gotchas:**
1. **Batching vs Retry Incompatibility**: capnweb batches accumulate calls until `await`. If you retry a batch, you might double-send earlier calls that were already queued.
2. **No Partial Success Recovery**: If batch fails at HTTP level (network timeout, 5xx), client has no visibility into which ops succeeded server-side.
3. **Callback Serialization**: `ProbeCallback` shows function-passing works, but retrying a batch with callbacks could cause duplicate execution or stale closures.
4. **Worker Transport Behavior**: Cloudflare Work...