docs(agent-queue): manifest field table (active vs reserved) + tick Phase 1 Slice 1 (P1-S1)
- README: new "Manifest fields (Gigafactory Phase 1)" table marking ACTIVE vs
RESERVED, capability-grammar table, idempotency-key semantics, copilot engine
mapping, COPILOT_BIN, and capability_mismatch/no_engine result values.
- GIGAFACTORY_ROADMAP: tick only the fully-completed P1 boxes (frontmatter
parsing, capability detect+match, priority, backward-compat, capability
grammar, engine-class taxonomy, idempotency-key semantics, README/progress),
annotate partials, and bump §0 Phase 1 to in-progress 35%.
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