chiguyong
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c0a44b413b
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feat(U3): G6 AdvancePhaseTool + ReActEngine phase enforcement
- AdvancePhaseTool calls engine.advance_phase(), returns new phase or error
- ReActEngine.__init__ accepts phase_policy param (None = no enforcement, backward compat)
- _current_phase + _steps_in_phase fields track state machine
- advance_phase() transitions PLANNING → BUILDING → VERIFICATION → DELIVERY
- _check_phase_permission() returns structured error dict if tool blocked
- _execute_tool checks phase before dispatch (advance_phase name bypasses)
- Auto-advance safety net via _maybe_auto_advance() + auto_advance_after_steps
- Phase reset in reset() method
- 27 unit tests covering characterization, permission, transitions, auto-advance, tool integration
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2026-06-30 00:07:58 +08:00 |