f2s-kb-sync

---

name: f2s-kb-sync description: Accept an explicit capability list or infer from zero input; first output a knowledge-base update outline, then write topics/index/manifest after confirmation; triggers: f2s-kb-sync、全局同步、知识库同步、已实现能力、global sync、sync knowledge base、implemented capability

Execution scope: this skill only maintains .Knowledge; by default it does not modify the configuration-root rules/skills.

Orchestration (main / sub-agent)

• The meaning of subAgent / switchAgentVerification uses the unified entry as the only source of truth: Cursor/Claude read the configuration-root rules/f2s-flow2spec-unified-entry.*; Codex reads .codex/topics/f2s-flow2spec-unified-entry.md (same source, mirrored by flow2spec init).
• Step 1 (material collection): when subAgent=true, read-only collection may be split across sub-agents; they must not write files.
• Step 2 (outline + user confirmation): must be completed by the main agent; confirmation authority must not be delegated.
• Step 3 (write): when subAgent=true, writing may be split by confirmed outline item. Hard rule: before a sub-agent writes, it must load the opening summaries of 2-3 neighboring topics to align narrative style.
• Write-authority hard rule: manifest-routing.json and .Knowledge/index.md are always written at a single point by the main agent; delegation is forbidden.
• Verification: by default, the writing side verifies its own work; this SKILL does not bind cross-agent verification.

f2s-kb-sync (Outline First, Then Write)

Input (Optional)

1. The user explicitly provides an "implemented capability list".
2. Zero input: the Agent infers from current context.
3. Supporting materials: @ files, requirement documents, architecture notes, etc.

Mandatory Flow (Order Must Not Be Reversed)

Step 1: Collect Materials (Read-Only)

• Summarize the user's target, scope, and priority.
• Summarize implemented capabilities (user-specified + Agent-inferred).
• Compare against the existing knowledge base:
  • .Knowledge/topics/
  • .Knowledge/index.md
  • .Knowledge/manifest-routing.json
  • .Knowledge/matchers/*.json (the shards corresponding to routing matcherPath)
  • .Knowledge/stock-docs/
• Topic-granularity scan: roughly scan existing topics for the following signals. If hit, list them as "recommended split" in the step 2 outline (does not block the sync flow):
  • The corresponding stock-doc exceeds 300-500 lines.
  • includeAny has more than 12 terms.
  • The topic body contains second-level headings covering more than 3 unrelated responsibility domains.

Step 2: Output the "Update Outline" (Required)

The outline must include at least:

1. Sync goal.
2. Capability list (user-specified / Agent-inferred / merged result).
3. Information sources.
4. Proposed file-change list (exact paths).
5. Topic sync plan: for each capability, state whether it updates an existing topic or creates a new topic, and list topicId, topic file, index row, and manifest/matcher changes. If topicMetadata is involved, list candidate primary / tags / confidence and evidence; if evidence is unclear, write "do not classify / do not write for now".
6. Stock-doc consolidation plan (hard rule): For every topic being "created / updated", check whether its "Detailed background / Related materials / Long-form source / Reference documents" reference slot already has a corresponding .Knowledge/stock-docs/*_终稿.md:
   • Exists → reference it directly;
   • Missing but the capability being synced is already implemented in code → the outline must list "generate stock-docs/<capability>_终稿.md", noting the consolidation sources (the matching req-docs/*_技术方案.md + implemented code + clarification doc). Before step 3, this SKILL first triggers f2s-doc-final to consolidate (or waits for user confirmation to hand-write), then points the topic to the stock-doc;
   • Capability is still at the req-docs stage without code → the topic's "Long-form background" section writes a placeholder "to be generated by f2s-doc-final after the code lands". Do not list req-docs/* in this slot.
   • Basis: see rules/f2s-topic-authoring.* "Directory boundary for long-form background references (hard rule)".
7. Out-of-scope items.
8. Prompt to wait for user confirmation.

Before confirmation, writing any changes is forbidden.

Step 2.5: Consolidate Stock-Docs (If Step 2 Listed Any)

After the user confirms the outline and before any .Knowledge/topics/ write, consolidate each stock-docs/*_终稿.md listed in outline item 6:

• Prefer entering f2s-doc-final directly (within the same session; no re-trigger needed);
• Or hand-write per .Knowledge/template/ (if a final-draft template exists) and save it;
• Only after the stock-doc is written and its path is known, enter step 3 and point the topic's "Long-form background" section at that stock-doc.

Prohibited: skipping this step and writing a topic whose "Long-form background / Related materials" slot lists req-docs/* files.

Step 3: Write After Confirmation

Hard rule: if sub-agent splitting is enabled, a sub-agent must read the opening summaries of 2-3 neighboring topics before writing to align narrative style; manifest-routing.json and .Knowledge/index.md are written at a single point by the main agent, and sub-agents have no write authority for them.

Authoring-side guideline: if this step adds or modifies topics, topicMetadata, or topicDependencies, first Read the full rules/f2s-topic-authoring.* (Cursor/Claude: rules/f2s-topic-authoring.mdc; Codex: .codex/topics/f2s-topic-authoring.md) before writing.

Update according to the outline, item by item:

• .Knowledge/topics/*.md
• .Knowledge/index.md (sync the "Associated documents (summary)" column in the topic routing table)
• Routing manifest (as needed). When creating a new topic, also sync topicPaths and necessary taskToTopicRules / matcher shards. Write topicMetadata only when evidence is clear; classification is only for governance, audit, and reading expectations, does not participate in route matching or execution requirements, and must not be used to create, rename, or split topics.
• .Knowledge/stock-docs/*.md (add source documents as needed)

Step 4: Closing Summary

• List modified paths and purpose.
• List skipped items and reasons.

Output Summary Format (Recommended)

## Knowledge-Base Sync Result

### Confirmed Capability Scope
- <capability 1>
- <capability 2>

### Modified Files
- .Knowledge/topics/<topic>.md: <change description>
- .Knowledge/index.md: <change description>
- .Knowledge/manifest-routing.json: <change description or "unchanged">
- .Knowledge/matchers/<id>.json: <change description or "unchanged">
- .Knowledge/stock-docs/<doc>.md: <change description or "unchanged">

### Skipped Items
- <item>: <reason>

Complex Scenario Example

The user only says "/f2s-kb-sync sync it" and provides no capability list.

• Step 1 first makes a minimal inference (for example, identify 1-2 capability domains from git diff / directory names), and provides the evidence.
• Step 2 must output an outline and wait for "confirm"; before confirmation, writing any .Knowledge file is forbidden.
• After confirmation, execute only items in the outline. If the user narrows the scope mid-flow, record skipped items in the closing summary.

Constraints

• Outline first, write second.
• Add in small increments; avoid whole-file rewrites.
• Prefer in-place updates for the same topic.
• Each topic in index.md needs summary-level clickable Markdown links to stock-docs/req-docs (format: [title](relative path), 1-3 links; "none" is allowed).
• Do not modify the configuration-root rules/skills.

Completion Self-Check

1. No writes happened before confirmation (must be false).
2. Topic files and index rows correspond one-to-one, and the "Associated documents (summary)" column has been updated.
3. topics / taskToTopicRules / topicDependencies in manifest still reference valid paths.
4. If topicMetadata was written: every key exists in topicPaths; primary / tags / confidence are valid; type-prefix naming was avoided.
5. The configuration-root rules/skills was not modified (must be false).
6. The step 2 outline + user confirmation were not delegated to a sub-agent; before step 3 sub-agent writes, 2-3 neighboring topic summaries were loaded; manifest / index were written by the main agent only.
7. For every topic created or updated, its "Long-form background / Detailed materials / Related materials / Long-form source / Reference documents" reference slot points only at .Knowledge/stock-docs/*_终稿.md (or a finalized stock-doc); it must not list .Knowledge/req-docs/* files as the long-form source of truth. If the code has landed but the corresponding stock-doc is missing, step 2.5 consolidation must have been completed.