feat(P06): Integration & hardening — INTEG-01..05, MULTI-04

- INTEG-01: E2E ideation test (19 tests with proper structure)
- INTEG-02: E2E multi-project test (14 tests)
- INTEG-03: Version bump 0.9.0 → 0.10.0
- INTEG-04: AGENTS.md and README updates
- INTEG-05: All 594 tests passing
- MULTI-04: max_concurrent_projects config in ParallelizationConfig
- Fixed e2e-ideation test nesting and assertion issues

---ci---
phase: 6
milestone: v0.10
status: execute
decisions:
  - id: INTEG-01
    decision: E2E ideation test covers mechanical, acceptance, cascade, external, cross-project, chaos, spec
    rationale: 19 tests covering all ideation engine methods
    confidence: 0.95
  - id: INTEG-03
    decision: Version bumped to 0.10.0
    rationale: Minor update per semver for new ideation and multi-project features
    confidence: 0.99
  - id: MULTI-04
    decision: max_concurrent_projects added to ParallelizationConfig
    rationale: Controls parallel execution limit for multi-project pipelines
    confidence: 0.90
requirements:
  covered: [INTEG-01, INTEG-02, INTEG-03, INTEG-04, INTEG-05, MULTI-04]
---/ci---

AGENTS.md

@@ -84,7 +84,7 @@ templates/         # Template files (config.json, DECISIONS.md, specification.md
 ## Pipeline Flow
 
 ```
-SPECIFY → CLARIFY → RESEARCH → PLAN → EXECUTE → TEST → VERIFY → COMPLETE
+SPECIFY → CLARIFY → RESEARCH → IDEATE → PLAN → EXECUTE → TEST → VERIFY → COMPLETE
 ```
 
 Each stage is executed by `OrchestratorAgent.executeStage()`. The orchestrator delegates intelligent stages (research, plan, execute, test, verify) to specialized agents via `context.backend` when available, falling back to mechanical execution when no backend is configured. Mechanical stages (specify, clarify, complete) are always handled by the orchestrator directly.
@@ -134,7 +134,7 @@ IntelligenceBackend (unified interface)
 - Test framework: Jest with ts-jest
 - Test file pattern: `**/*.test.ts` in `src/`
 - Run: `npm run test`
-- 57 test suites, 527 tests covering types, core, git-native, verification, agent, backends, and utility modules
+- 58 test suites, 561 tests covering types, core, git-native, verification, agent, backends, ideation, multi-project, and utility modules
 - Tests use temp directories (os.mkdtempSync) and clean up after each test
 - Module resolution in jest uses moduleNameMapper to strip `.js` extensions
 
@@ -194,19 +194,18 @@ IntelligenceBackend (unified interface)
 
 ## Current State
 
+- **v0.10.0**: Ideate & Multi-Project — 3-tier ideation engine, `ciagent ideate` command, multi-project execution, `---ci--- project:` blocks, E2E tests
 - **v0.9.0**: Integration & hardening — OpenAI and Anthropic backends, all 19 agents with intrinsic mechanical logic, E2E v0.9 integration tests, parallel agent execution
 - **v0.8.0**: 11 newly-fleshed agents with mechanical methods, OpenAI/Anthropic config types, Gitea CI workflows
+- **New in v0.10**: IdeationEngine with mechanical/backend-enriched/cross-project tiers, `ciagent ideate` command with --category/--affected/--spec/--external/--cross-project/--project/--output flags, `IDEATE` pipeline stage between RESEARCH and PLAN, multi-project support with `active_projects` config and `--project all` flag, `---ci--- project: <slug>` commit blocks, `max_concurrent_projects` parallelization config
 - **New backends (v0.9)**: OpenAIBackend (gpt-4o, API key auth, OpenAI-Organization header), AnthropicBackend (Claude, API key auth, anthropic-version header, tool use translation)
-- **Config expansion**: BackendConfigSection now includes `openai` and `anthropic` in `llm_backends` with dedicated `OpenAIConfig` and `AnthropicConfig` types
-- **Auto-detection order (v0.9)**: opencode → openai → ollama-local → ollama-cloud → anthropic
+- **Config expansion (v0.10)**: `ideation` section in config with categories, thresholds, external signals, cross-project, chaos; `active_projects` array; `max_concurrent_projects` in parallelization
+- **Auto-detection order**: opencode → openai → ollama-local → ollama-cloud → anthropic
 - **All agents mechanical**: Every non-orchestrator agent (18/19) produces meaningful output without a backend — no "requires intelligence backend" stub errors
-- **Integration tests**: E2E v0.9 test with mock backend verifies multi-agent pipeline (researcher → planner → security-auditor → code-reviewer → verifier); all-agents-mechanical test iterates 18 agents
-- **Parallel execution**: OrchestratorAgent supports concurrent review agents with `limitConcurrency()`, controlled by `parallelization.max_concurrent_agents`
-- **New modules**: commit-parser (`---ci---` YAML block extraction/parsing), commit-builder (structured commit message generation), git-context (project state reconstruction from git log + branches), git-branch (phase/milestone branch lifecycle), ciagent-files (`.ciagent/` long-lived reference file management)
-- **Commit schema**: Every CIAgent-generated commit contains a `---ci---` YAML block with phase, milestone, status, decisions, escalations, requirements, lessons, and compound metadata
+- **Integration tests**: E2E v0.10 tests verify ideation CLI (mechanical tier), multi-project execution, all-agents-mechanical, parallel execution
+- **Pipeline stages**: SPECIFY → CLARIFY → RESEARCH → **IDEATE** → PLAN → EXECUTE → TEST → VERIFY → COMPLETE
+- **Commit schema**: Every CIAgent-generated commit contains a `---ci---` YAML block with phase, milestone, status, decisions, escalations, requirements, lessons, compound, and **project** metadata
 - **Branch strategy**: `phase/NN-slug` and `milestone/vX.X-slug` branches encode project structure; merged = complete, active = in progress
-- **Core engine rewrites**: DecisionEngine generates commit messages (not audit JSON), EscalationProtocol commits escalations as git artifacts, OrchestratorAgent uses git log as first impulse
-- **Verification layers**: All 4 layers implemented — structural, behavioral (test execution), security (STRIDE + CWE), quality (3-persona review)
-- **CLI**: All 11 commands wired up (`init`, `run`, `quick`, `debug`, `verify`, `review`, `status`, `audit`, `clarify`, `rollback`, `ship`)
+- **CLI commands**: `init`, `run`, `quick`, `debug`, `verify`, `review`, `status`, `audit`, `clarify`, `rollback`, `ship`, `ideate`, `projects`
 - **Intelligence backends**: 5 options — OpenAI (LLM), Anthropic (LLM), OllamaLocal (LLM, localhost), OllamaCloud (LLM, remote), Opencode (Agent, --non-interactive). Auto-detection: opencode → openai → ollama-local → ollama-cloud → anthropic.
-- **Tests**: 57 test suites, 527 tests covering types, config, decision-engine, escalation, clarify, commit-parser, commit-builder, git-context, git-branch, ciagent-files, all 4 verification layers, file utils, backends (ollama, openai, anthropic, opencode, tool-registry), agents (all 18 non-orchestrator), zod validation, e2e, parallel execution
+- **Tests**: 58 test suites, 561 tests covering types, config, decision-engine, escalation, clarify, commit-parser, commit-builder, git-context, git-branch, ciagent-files, ideation, multi-project, all 4 verification layers, file utils, backends (ollama, openai, anthropic, opencode, tool-registry), agents (all 18 non-orchestrator), zod validation, E2E, parallel execution