Add config-backed harness adapters

.claude/scheduled_tasks.lock

@@ -0,0 +1 @@
+{"sessionId":"8b0848d6-9418-4a97-9b05-49254dbd4a28","pid":54127,"procStart":"Sun May 24 19:48:26 2026","acquiredAt":1779652664087}

.github/workflows/package-validation.yml

@@ -65,24 +65,9 @@ jobs:
         uses: actions/setup-node@v4
         with:
           node-version: '22'
-
-      # Cache node_modules - skip npm ci entirely if unchanged
-      - name: Cache node_modules
-        id: cache-modules
-        uses: actions/cache@v4
-        with:
-          # Include nested workspace node_modules so unhoisted deps
-          # (e.g. @slack/web-api under packages/slack-primitive) survive
-          # a cache hit — otherwise the cache restores only the root tree
-          # and skipping `npm ci` leaves the bundler unable to resolve
-          # them.
-          path: |
-            node_modules
-            packages/*/node_modules
-          key: modules-v2-${{ hashFiles('package-lock.json') }}
+          cache: 'npm'
 
       - name: Install dependencies
-        if: steps.cache-modules.outputs.cache-hit != 'true'
         run: npm ci
 
       # Cache turbo build outputs for incremental builds

.github/workflows/publish.yml

@@ -2033,7 +2033,6 @@ jobs:
             if (text.startsWith('revert version bump')) return true;
             return title.length === 0;
           }
-
           function sectionFor(commit) {
             if (commit.breaking) return 'Breaking Changes';
             if (commit.type === 'feat') return 'Added';

.trajectories/completed/2026-05/traj_4b2d63f6ljvh.md

@@ -0,0 +1,89 @@
+# Trajectory: Fix CI run 26263517444
+
+> **Status:** ✅ Completed
+> **Confidence:** 86%
+> **Started:** May 21, 2026 at 09:47 PM
+> **Completed:** May 24, 2026 at 09:45 PM
+
+---
+
+## Summary
+
+Updated harness adapters so built-in coding harnesses are serializable configs, added adapter lifecycle identity/merge behavior, and refreshed docs for defining custom harnesses.
+
+**Approach:** Standard approach
+
+---
+
+## Key Decisions
+
+### Normalized Relay changelog to Burn-style release notes
+
+- **Chose:** Normalized Relay changelog to Burn-style release notes
+- **Reasoning:** The top-level changelog should track actual released versions with concise impact-oriented Added/Changed/Fixed sections; generated Product/Technical/Release scaffolding made released content look unreleased and duplicated release-only entries.
+
+### Updated release workflow changelog generator
+
+- **Chose:** Updated release workflow changelog generator
+- **Reasoning:** Future stable releases should write the same Burn-style cross-package notes now used in CHANGELOG.md; the generator now emits standard sections and filters release-only/trajectory/review placeholders instead of Product/Technical scaffolding.
+
+### Matched Relay AGENTS changelog guidance to Burn
+
+- **Chose:** Matched Relay AGENTS changelog guidance to Burn
+- **Reasoning:** Relay should tell agents to curate CHANGELOG.md [Unreleased] as work lands and to avoid generated Product/Technical/Releases sections, matching the Burn repo guidance adapted for Relay's single root changelog.
+
+### Restored Keep a Changelog and SemVer contract
+
+- **Chose:** Restored Keep a Changelog and SemVer contract
+- **Reasoning:** Relay should keep the standard changelog header, agent guidance, and generated release sections aligned with Keep a Changelog while explicitly documenting Semantic Versioning.
+
+### Use AWS managed CachingDisabled cache policy for PR previews
+
+- **Chose:** Use AWS managed CachingDisabled cache policy for PR previews
+- **Reasoning:** The failing job hit CloudFront's custom cache policy quota while SST created WebServerCachePolicy per preview stage; previews can safely trade edge response caching for quota stability while production keeps the custom OpenNext cache policy.
+
+### Added SDK-level harness adapter registry
+
+- **Chose:** Added SDK-level harness adapter registry
+- **Reasoning:** Interactive spawns already accept arbitrary CLI strings, but workflow non-interactive execution was coupled to the built-in CLI registry and hardcoded model flags. A runtime registry plus serializable workflow harness config lets SDK/YAML callers add harnesses without Relay code changes.
+
+### Replaced external Relaycast MCP dependency with owned Agent Relay MCP stdio server
+
+- **Chose:** Replaced external Relaycast MCP dependency with owned Agent Relay MCP stdio server
+- **Reasoning:** The MCP surface needed by spawned agents is small enough to own locally; using @relaycast/sdk directly avoids importing @relaycast/mcp internals while preserving callback resource updates and existing relaycast tool naming.
+
+### Moved harness adapters into broker spawn path
+
+- **Chose:** Moved harness adapters into broker spawn path
+- **Reasoning:** The first pass only affected workflow subprocess execution. AgentRelay spawnPty ultimately posts to the Rust broker, so SDK-provided harness definitions now serialize on spawn requests and the broker applies binary resolution, interactive argv templates, model args, and bypass flags when launching PTY agents.
+
+### Built-in harnesses are now data-backed adapter configs with optional lifecycle adapter identity
+
+- **Chose:** Built-in harnesses are now data-backed adapter configs with optional lifecycle adapter identity
+- **Reasoning:** This keeps codex/claude/opencode available by default while letting SDK and broker-spawned custom harnesses use the same serializable HarnessDefinition shape; adapter selects built-in lifecycle behavior when config alone is not enough.
+
+---
+
+## Chapters
+
+### 1. Work
+
+_Agent: default_
+
+- Normalized Relay changelog to Burn-style release notes: Normalized Relay changelog to Burn-style release notes
+- Updated release workflow changelog generator: Updated release workflow changelog generator
+- Matched Relay AGENTS changelog guidance to Burn: Matched Relay AGENTS changelog guidance to Burn
+- Restored Keep a Changelog and SemVer contract: Restored Keep a Changelog and SemVer contract
+- Use AWS managed CachingDisabled cache policy for PR previews: Use AWS managed CachingDisabled cache policy for PR previews
+- Preview failures are caused by active PR volume exceeding CloudFront custom cache policy quota; stale cleanup ran successfully but cannot help while open PR previews outnumber the quota. The durable fix is reusing a managed cache policy for PR stages.
+- Added SDK-level harness adapter registry: Added SDK-level harness adapter registry
+- Replaced external Relaycast MCP dependency with owned Agent Relay MCP stdio server: Replaced external Relaycast MCP dependency with owned Agent Relay MCP stdio server
+- Moved harness adapters into broker spawn path: Moved harness adapters into broker spawn path
+- Built-in harnesses are now data-backed adapter configs with optional lifecycle adapter identity: Built-in harnesses are now data-backed adapter configs with optional lifecycle adapter identity
+
+---
+
+## Artifacts
+
+**Commits:** c41b133d, 28ec8236, bcc07d62, 2078bc8f, cfa9b0b9, ae28c3c3, f3f3744d, 83ab2bba, 11281768, fd09d477, 423184bb, 0d49dd41, baaef913, c148f419, f82bd2cc, 117e76d6, 2b363811, 68fddec4, bf9427dc, eefe64ba, d8973ce7, f57c3e2f, d76b0f40, 19b22846, c1cf84d3, 6c83d4bd, fa3f757f, c992acd3, 9a97be3a, 489d32cd, 9d800626, de2169fc, dc6cad51, 75771972, 4be45b44, f953d0f9, bbe4f00e, 90dc1faa, e5db219c, 66879e0c, 79311e9f, 8bcc3cfe, 3332e837, c13ee318, 5b4005ef, 6dea769a, c8299b7a, 839d0cda, e1022e4d
+**Files changed:** 169