Lataa Pharos 0.13.0

Changelog
- 4075807 Add content-kind selection index to teach-doc library section (LEARN-230)
- ef9937e Authoring lint warnings on lesson/reference create and revise (LEARN-229)
- 7791a0c Collapse teach-skill docs to the server-wired contract (LEARN-231)
- 8f893a9 Drop internal filename from katex delimiter note (LEARN-230)
- 4438d19 Feature-driven iframe injection with HTML-token detection (LEARN-228)
- 8d4d9aa Pinned global vendor cache with /vendor serving; retire asset add/redeploy (LEARN-230)
- f6ee164 Strip vendor-cache internals from teach docs; teach markup only (LEARN-230)
- 4f933f6 Tighten teach-doc wording per writing-for-agents review (LEARN-230)
- 336d53c feat: deliver Inter via the pinned vendor pipeline
- 492202b feat: register sql-workbench asset (vendored, jsDelivr-pinned v0.2.6)
- a976c7c feat: relay workbench journal events to the workspace ingest endpoint (LEARN-232)
- a7bbfb7 feat: resolve bare-slug dataset= to the workspace datasets route (LEARN-234)
- 017e6db feat: server auto-injects copy buttons for data-copy code blocks
- 0289152 feat: single-owner database — kernel locks + pidfile identity check (LEARN-235)
- c77407e feat: teach skill gains workbench journal step + disclosed BENCH.md (LEARN-207)
- c3cfd20 feat: workbench event journal, dataset serve, CLI verbs (LEARN-206)
- f03f66f fix: harden relay input guard, tighten teach-doc journal claims (LEARN-232)
- 35bb870 fix: relay theme changes into nested frames (LEARN-194/205)
- 2700d3a fix: workbench log pretty output never truncates payloads (LEARN-233)
- 36db6f3 teach docs: correct BENCH.md to the agent-usable workbench surface
- db99253 teach docs: dedupe marker dispatch, fix hljs scoping, note stimulus + offline degrade
- 1b444b2 teach skill: inline library marker table so agents reach the vega convention