Gsd:ingest Docs

<objective>

Build the full .planning/ setup (or merge into an existing one) from multiple pre-existing planning documents — ADRs, PRDs, SPECs, DOCs — in one pass.

• Net-new bootstrap (--mode new, default when .planning/ is absent): produces PROJECT.md + REQUIREMENTS.md + ROADMAP.md + STATE.md from synthesized doc content, delegating final generation to gsd-roadmapper.
• Merge into existing (--mode merge, default when .planning/ is present): appends phases and requirements derived from the ingested docs; hard-blocks any contradiction with existing locked decisions.

Auto-synthesizes most conflicts using the precedence rule ADR > SPEC > PRD > DOC (overridable via manifest). Surfaces unresolved cases in .planning/INGEST-CONFLICTS.md with three buckets: auto-resolved, competing-variants, unresolved-blockers. The BLOCKER gate from the shared conflict engine prevents any destination file from being written when unresolved contradictions exist.

Inputs: directory-convention discovery (docs/adr/, docs/prd/, docs/specs/, docs/rfc/, root-level {ADR,PRD,SPEC,RFC}-*.md), or an explicit --manifest <file> YAML listing {path, type, precedence?} per doc.

v1 constraints: hard cap of 50 docs per invocation; --resolve interactive is reserved for a future release.

</objective>

<execution_context>

@${CLAUDE_PLUGIN_ROOT}/workflows/ingest-docs.md

@${CLAUDE_PLUGIN_ROOT}/references/ui-brand.md

@${CLAUDE_PLUGIN_ROOT}/references/gate-prompts.md

@${CLAUDE_PLUGIN_ROOT}/references/doc-conflict-engine.md

</execution_context>

<context>

$ARGUMENTS

</context>

<process>

Execute the ingest-docs workflow end-to-end. Preserve all approval gates (discovery, conflict report, routing) and the BLOCKER safety rule.

</process>