Inserts blocking Oracle verification todos (plan-1b / plan-2b /
plan-6b in the canonical, plan-1b / plan-2b / plan-5b in the gpt and
gemini variants) between each major Prometheus phase. Each gate is a
single task(subagent_type=oracle) invocation that must return
VERDICT: GO; NO-GO is a directive to fix the cited issues and rerun on
the same Oracle session, not a license to skip.
Adds a new 'Oracle Verification (Phase Gates)' section to
plan-generation.ts with the concrete invocation prompts for each gate:
phase 1 verifies interview completeness, phase 2 verifies the generated
plan, phase 3 verifies plan readiness for execution before /start-work
handoff.
Also adds a plan-generation.test.ts smoke suite (9 cases) that pins
the new todo ids, the section name, the GO/NO-GO format, the
'fix the cited issues' fallback, and the relative ordering.
YeonGyu-Kim