docs(p10-1a-2): README/HANDOFF/ARCHITECTURE/SMOKE/INDEX + HOTFIXES; chore: bump version 0.6.0 → 0.7.0

- README: note Rust .rs ingest active (code-rust-ast-v1), update Mermaid parse node + chunker labels, update supported formats note in Quick start and ingest command table; add code citation fields (symbol, code_lang, repo) and filter flags note
- HANDOFF: flip P10 row to note 1A-1 ✅ + 1A-2 PR open; add one-liner cross-link to HOTFIXES 2026-05-19 entries
- ARCHITECTURE: add kebab-parse-code node + edge (app → pcode, pcode → ptypes) to Mermaid graph; add directory tree entry; add code parser locked-in decision row (tree-sitter lives parser-side, design §6.3)
- SMOKE: add P10-1A-2 Rust code ingest section (ingest.code config keys, verification steps, known behaviors); add checklist item
- tasks/INDEX.md: flip p10-1A-1 to ✅, update p10-1A-2 to 🟡 PR open
- tasks/p10/INDEX.md: same flips
- tasks/HOTFIXES.md: add two 2026-05-19 dated entries (AST_CHUNK_MAX_LINES constant vs config deviation + SourceType::Code deferred)
- tasks/p10/p10-1a-2-rust-ast-chunker.md: append two HOTFIXES cross-link lines in Risks/notes
- docs/superpowers/specs/2026-04-27-kebab-final-form-design.md §10.1: note p10-1A-2 surface activation
- Cargo.toml: version 0.6.0 → 0.7.0 (dogfooding-ready = minor bump trigger per CLAUDE.md)
- Cargo.lock: regenerated

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

docs/superpowers/specs/2026-04-27-kebab-final-form-design.md

@@ -1541,6 +1541,8 @@ HOTFIXES 의 `2026-05-07 — p9-fb-27` 항목이 details shape 의
 interim deviation (IoFailure / OpTimeout 신규 typed signal 도입 전까지의
 transitional 형태) 의 source of truth.
 
+**p10-1A-2 surface 활성화 (2026-05-19)**: Rust 소스코드 ingest (`code-rust-ast-v1` chunker, `tree-sitter-rust`) 가 활성화됨. `.rs` 파일을 워크스페이스에 두면 `kebab ingest` 가 AST 단위로 chunk 생성 + `citation.kind = "code"` 로 검색 가능. `kebab schema --json` 의 `stats.code_lang_breakdown` 에 `"rust": N` 이 표시됨. 본 activation 으로 kebab 자기 crate 를 dogfooding KB 에 색인 가능. `SourceSpan::Code` (§3.4) 와 `MediaType::Code` (§3.5) 는 1A-1 에서 이미 spec 에 반영됨. 두 deferred deviation (`AST_CHUNK_MAX_LINES` 상수 고정, `SourceType::Code` 미존재) 은 `tasks/HOTFIXES.md` (2026-05-19) 에 기록.
+
 ### 10.2 MCP server transport (fb-30)
 
 `kebab mcp` 가 stdio JSON-RPC server. Rust SDK = `rmcp 1.6`. Tool surface