Save local app updates and ignore local docs files

Merge branch 'feature/retrieval-planner-v1'

Add full-document context expansion for top retrieval docs

Add planner-driven two-pass retrieval flow for ask

Refine assistant system prompt for procedural runbooks

Add re-ingest and super-admin admin access flow

feat(admin): add docs-set deletion and harden web ingest proxy

feat(ask): add inline generated visuals and balanced grounding mode

fix(rag): improve keyword ranking and context quality for node questions

fix(ask): improve answer tone, formatting, and proxy error handling

docs(readme): add step-by-step Google OAuth setup

feat(web-ingest): add docs sets, link controls, and multimodal web chunks

feat(ingest): add admin webpage ingestion for public URLs

feat(admin): add admin panel with document and history management

feat(api): add image-caption ingestion and image evidence retrieval