feat: pipeline hygiene — epic-review in Close, skill dir docs, audit …

…cleanup (v0.1.51)

- Added Step 4.5 (epic-review spec compliance) to Close phase
- Documented skills/ vs codex/skills/ directory responsibilities in CLAUDE.md
- Added shared rp-review-protocol references to all 3 review skills
- Replaced stale audit warnings with verified safety invariants
- Archived 13 stale/test epics from .flow/ state

Co-Authored-By: Claude Opus 4.6 (1M context) <[email protected]>

feat: RP Orchestrate pattern adoption — parallel explore, plan-as-con…

…tract, concurrency awareness (v0.1.50)

- Brainstorm phase now spawns 3 parallel explore agents (patterns, gaps, impact)
  before context_builder call for multi-dimensional codebase analysis
- flowctl worker-prompt outputs PLAN CONTRACT preamble (workers must read epic spec
  first, implement only their task) and CONCURRENT_WORKERS block (other active tasks
  + locked files)
- worker.md Phase 2 restructured: plan-as-contract (2.0), concurrency awareness (2.1),
  read specs (2.2) — workers parse concurrent context and escalate file conflicts
- Codex step-03-find-ready.md updated with lock + worker-prompt generation

Co-Authored-By: Claude Opus 4.6 (1M context) <[email protected]>

feat: RP agent_run pipeline, ADR/spec commands, shared RP orchestrati…

…on, context eng, skill expansions (v0.1.49)

Major changes:
- RP agent_run pipeline integration for worker spawning
- New /flow-code:adr and /flow-code:spec commands
- Shared RP/MCP orchestration guide (_shared/rp-mcp-orchestration.md)
- Context engineering skill for token management
- Expanded brainstorm, export-context, rp-explorer, run skills
- Numerous flowctl core+CLI improvements across 34K lines of Rust
- Version bump 0.1.48 → 0.1.49

Co-Authored-By: Claude Opus 4.6 (1M context) <[email protected]>

feat: RP agent_run pipeline + 8 optimizations (v0.1.48)

Replace Claude Agent/Teams with RP agent_run for all agent spawning:
- Workers self-create worktrees, coordinator only does start+merge
- Scouts via agent_run(explore), workers via agent_run(engineer/pair)
- steer replaces SendMessage for cross-worker coordination
- Streaming continuous flow replaces wave-based execution

Pipeline optimizations:
- flowctl startup: single CLI call replaces 6 startup calls
- worker-phase next --all: batch return all phases (24→1 calls)
- worker-prompt --inline-skills: embed core rules in prompt
- checklist check-all: batch verification (8→1 calls)
- Brainstorm context_builder + oracle_send reuse across Plan
- Speculative execution: Plan Review + Work Wave 1 in parallel
- Impl Review reuses Plan Review chat_id via oracle_send
- Worker Phase 10 guard dedup when no new commits

Co-Authored-By: Claude Opus 4.6 (1M context) <[email protected]>

v0.1.32: quality, consistency, and documentation sweep

flowctl v0.1.29 — unified versioning + auto-provisioning

flowctl v0.1.26 — auto-provisioning from release