docs: boocode-lift-analysis, openspec change docs, codesight cache, deps

- Add boocode-lift-analysis.md: comprehensive 30-repo lift matrix across 25 domains
- Add openspec/ change docs: domain2-code-intelligence, domain3-multi-agent, impeccable-wave, streaming-codeblocks
- Update .gitignore: .impeccable/, .omo/, bun.lock, DESIGN.md, PRODUCT.md
- Update dependencies in package.json + pnpm-lock.yaml
- Update .codesight/ analysis cache

openspec/changes/domain3-multi-agent/tasks.md

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+# Tasks — Domain 3: Multi-Agent Orchestration
+
+## Phase 1 (4 tasks)
+
+### 1. Task state machine
+Add formal states to Step:
+- Read ./apps/coder/src/services/flow-runner.ts and ./apps/coder/src/services/flow-runner-decisions.ts
+- Extend Step.type to add TIMED_OUT state
+- Add retriable flag: retry_count, max_retries to Step
+- Wire into flow-runner's advance/delegate path
+- On failure with retriable=true: re-queue instead of failing
+**Verification**: tsc --noEmit passes
+
+### 2. DO_WHILE loop step
+- Add 'do_while' to StepKind
+- Step definition: { kind: 'do_while', condition: (ctx) => boolean, steps: Step[] }
+- Flow runner executes steps, re-evaluates condition, loops or advances
+- Guard against infinite loops (max 100 iterations default)
+**Verification**: tsc --noEmit passes
+
+### 3. SWITCH branch step
+- Add 'switch' to StepKind
+- Step definition: { kind: 'switch', cases: [{ when: (ctx) => boolean, steps: Step[] }] }
+- Flow runner evaluates cases in order, executes first matching case's steps
+- Default/else case support
+**Verification**: tsc --noEmit passes
+
+### 4. FORK_JOIN step
+- Add 'fork_join' to StepKind
+- Step definition: { kind: 'fork_join', branches: Step[][], joinStrategy: 'all' | 'any' }
+- Flow runner dispatches all branches in parallel via existing task queue
+- On completion, gathers results and passes to join handler
+**Verification**: tsc --noEmit passes
+
+## Phase 2 (1 task)
+
+### 5. JSON DAG format
+- Define JSON schema for flow DAG: nodes, edges, conditions
+- Create DAG loader that produces Step[] from JSON
+- Add validation for cycles, unreachable nodes, missing deps
+- Parallel to existing TypeScript Step[] arrays — not a replacement
+**Verification**: tsc --noEmit passes. Load a sample JSON DAG and verify it produces correct Step[].
+
+## Phase 3 (2 tasks)
+
+### 6. Parallel batch execution
+- Modify flow runner to dispatch independent steps concurrently
+- Use Promise.all for independent steps in the same wave
+- Respect dependency ordering
+**Verification**: tsc --noEmit passes. Two independent steps with different durations finish concurrently.
+
+### 7. Phased lifecycle template
+- Create conductor/flows/lifecycle.ts with 6-phase template:
+  ticket → research → plan → execute → commit → review
+- Each phase is a step with agent dispatch + output validation
+- Users can fork and customize
+**Verification**: tsc --noEmit passes. Flow definition renders correct Step[].