docs(skills): remove bun-runtime — homelab guest runtime is quickjs

fix(diagrams): stable toolbar strip in the chat renderer iframe

fix(diagrams): pin the viewer frame in the chat renderer

feat(diagrams): port to apiVersion 4, add drawio chat/Files renderer

feat(extensions): skill-gate teach-first provider gate

docs(github-skill): actions ids must be numeric

refactor(extensions): retire fabric-bun-guidance — bun-first doctrine rolled back

feat(extensions): context-guard — projection threshold 8KB -> 16KB

docs(skills): bun-runtime — doctrine out, in-guest data recipe card in

feat(pi-web-plugins): diagrams workspace panel plugin for pi-web

feat(skills): explore + drawio — migrated from dot-pi external-layout split

feat(pi-web-plugins): diagrams workspace panel plugin for pi-web

feat(skills): explore + drawio — migrated from dot-pi external-layout split

feat(diagrams): ctrl+wheel zoom for drawio viewer, zoom persisted per file

feat(pi-web-plugins): add diagrams workspace panel plugin

docs(skills): github — native Actions toolset, REST demoted to break-glass

docs(skills): WHEN-form descriptions for zai-mcp and github

docs: sync README with current extensions and skills catalog

docs(skills): fabric-orchestration — extensions.llm map/reduce + glm budget gotcha

fix(extensions): bun-guidance — lead with prebound __bun, native-timer note

feat(extensions): llm — bare inference tool for fabric_exec map/reduce

fix(extensions): bun-guidance — restore CONTENT template opener clobbered by ladder-line edit

fix(extensions): bun-guidance — lead with prebound __bun (PR #154), un-stale the timer rule

docs(skills): fabric-orchestration — extensions.llm bare inference + glm budget gotcha

chore(extensions): llm — remove leftover llm_min clone and PINGMODE bisect shortcut

fix(extensions): llm — default budget 1024 + plain-answer default system; drop diagnostic clones

chore(extensions): llm — v4 error label