fix(scripts): exclude static/ from top-level doc sections

[3822802]

Summary

docs/AGENTS.md currently links to ./static/llms.txt, which does not exist. This fixes the root cause in the generator.

Root cause

discoverTopLevelSections() in scripts/lib/docs-utils.js treats every directory under docs/ as a documentation section unless it is listed in CONSTANTS.skipDirs.

docs/static/ is not a documentation section — it only contains docs/static/assets/. Since it was not excluded, the generator emitted a section entry for it, producing a link to a llms.txt that is never generated.

Fix

Add 'static' to CONSTANTS.skipDirs, consistent with how images, videos, logo and openapi are already excluded.

   skipDirs: [
     'node_modules', '.git', 'dist', 'build', 'coverage',
-    '.next', 'images', 'videos', 'logo', 'openapi', '.claude', 'snippets'
+    '.next', 'images', 'videos', 'logo', 'openapi', '.claude', 'snippets', 'static'
   ],

After this change, regenerating docs/AGENTS.md will no longer emit the - [Static](./static/llms.txt) entry.

Verification

• docs/static/llms.txt → 404 (does not exist)
• docs/static/ → contains only assets/
• docs/AGENTS.md line 17 → - [Static](./static/llms.txt)

Fixes #1806

[cb-heimdall]

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