Why: downstream parsers are unreachable through the Host handle and the base lacks xlsx/pptx parsers; MS1 needs both. The snapshot also missed interface methods, so adding one was undetectable.
Evidence: request follows compat-policy sect.6 four elements; behavior contract and limits in the proposal body (documents has no CI; verified via git diff --check recorded on the Dev task card).
Impact: docs only; compat-policy sect.3 gains one sentence, usage.md format list gains xlsx/pptx.
Refs: docs/proposals/2026-10-06-ext-5-host-parse-document.md
Why: The base must stay unmodified by downstream products, so the roadmap, compatibility window, and plugin contract need a written proposal before further forks.
Evidence: Three proposals under docs/proposals and a short pointer in the plugin development guide.
Impact: Downstream work follows extension-point requests and a published base version. Tag commands in the compat proposal are not executed.
Refs: .task/feature-base-extension-roadmap.md
Co-authored-by: Cursor <cursoragent@cursor.com>
Why: the backend now registers tavily_search/web_search via
Agent-Native's TavilyProvider, so the guide's not-ported reason no
longer holds.
Evidence: backend PR records the registration and runtime checks.
Impact: table row updated, library count 44 -> 46.
Refs: feature/tavily-search-tool task card.
Why: deciding what enters the library from an external prompt catalog
needs a stated rule (carrier mechanism or future slot) and an auditable
per-item disposition, otherwise coverage drifts by reviewer taste.
Evidence: table maps every Claude Code catalog entry to a library module
or an explicit not-ported reason.
Impact: guide gains section 9; no code change.
Refs: feature/prompt-catalog-coverage task card.
Why: the prompt system's design rationale (layering, the eight module
patterns, trigger semantics, override chain) needs to live with the
docs so future prompt work follows it instead of re-deriving it.
Evidence: guide content distilled from the implemented library and the
Claude prompt catalog analysis recorded in the task card.
Impact: new docs/guides/prompt-library-design.md; no code change.
Refs: feature/prompt-library task card.
Why: T2-T4 changed the interaction foundation (pure-inbox rail, four-entrance command bus, overlay workspaces) and the guide still described the classic tabs; T5 acceptance also requires the verification record with the zero-page walkthrough.
Evidence: zero-page walkthrough 12/12 PASS on a fresh real binary (fresh data dir: empty instance -> project/conversation -> slash commands -> #upload card lifecycle -> card action receipts -> tidy -> HITL block+resolve -> button-entrance dispatch -> plugin workspace declaration -> artifacts -> four-entrance audit); StatusLamp shape+color dual encoding asserted by ui suite; combo make test at pinned heads.
Impact: usage guide sections 4.2-4.7/5/6.2/7 rewritten; new T5 record; no code change.
Refs: docs/proposals/2026-09-30-ui-inbox-command-workspace.md T5; task card feature/polish-r1
weichen
