docs: rewrite README with clearer value proposition

feat: add Multi-Team Intelligent Orchestrator v5.3.1

fix: add content-team capabilities.yaml

docs+fix: architecture docs rewrite + CronDispatcher + chain_id tracking

fix: 7 bugs from e2e test — dispatcher rewrite, dedup, interval, immutable events, templates, trace, bus_mode

feat: P3 complete — team self-evolution, intelligence team, parallel scheduler

feat: P2 complete — knowledge sharing, cost control, chain visualization

feat: P1 — dynamic capability registry + priority queue

feat: P0 complete — auto-dispatch + data pipeline

feat: Watchdog V2 — root cause analysis, performance profiling, failure prediction, smart recovery

arch: embed cross-team collaboration + watchdog into framework foundation

feat: Watchdog — intelligent monitoring for cross-team collaboration

fix: CLI --context flag (was --body) + severity choices (LOW/MEDIUM/HIGH/CRITICAL)

feat: Event Bus runtime — cross-team auto-collaboration engine

feat: cross-team Event Bus — automatic team-to-team collaboration