Embed dashboard in the binary; drop "insights" naming

[Exelord]

Summary

Two owner directives:

1. "vx serve --ui ... it should not be required! binary should have all necessary files" — a compiled vx failed --ui with --ui requires apps/insights/dist because it resolved the SPA from disk.
2. "remove all insights naming".

Embedding

The dashboard now ships inside the binary:

• apps/ui builds to a single self-contained dist/index.html (JS + CSS inlined by a ~20-line generateBundle plugin in vite.config.ts — no new dependency).
• src/cli/ui-asset.ts imports it with with { type: 'file' }, so bun build --compile embeds the bytes; the import resolves to a /$bunfs/ path that Bun.file() reads. It's imported dynamically (only on --ui), so a source checkout that hasn't built the UI never breaks vx run.
• vx serve --ui serves that one file for every non-API GET (the SPA is a hash router, so every route returns the same bytes). The old on-disk directory walk, MIME map, and VX_INSIGHTS_DIST are gone.
• build.ui task (cd apps/ui && bun run build, boundary-free workspaceFiles I/O) builds the SPA; each build.bun.* cross-compile depends on it, so the binary embeds a fresh UI and a UI change cascades into the binary's cache key. It's a same-project dep (not a cross-project @vzn/vx-ui#build ref that scoped loading wouldn't resolve), so vx run test and CI aren't pulled into a UI build.

Verified end-to-end: compiled a --minify --bytecode binary, deleted apps/ui/dist entirely, and vx serve --ui still served the embedded "vx dashboard" — plus vx run build.bun.linux-x64 builds the UI then compiles in one graph.

Rename (insights → ui / metrics / dashboard)

• apps/insights/ → apps/ui/; @vzn/vx-insights → @vzn/vx-ui
• src/orchestrator/insights-queries.ts → metrics.ts (+ test file)
• guide insights.md → dashboard.md; sidebar, brand ("vx insights" → "vx dashboard"), localStorage key (vx-insights:origin → vx-ui:origin), help text, README, cli.md, landing card, introduction
• VX_INSIGHTS_DIST removed (nothing on disk to point at)

Design-doc archives + the append-only implementation log keep their historical "insights" references; a new log entry records the rename.

Test plan

• bun src/bin.ts run ci — full gate green (925 tests)
• Release binary serves embedded UI with source dist removed
• vx run test does not trigger a UI build; vx run build.bun.* does
• module-boundaries test gains a .html asset carve-out (mirrors the existing .json one)
• No CACHE_VERSION impact

Note

This branches off main; the earlier query-dedup work (Tier 1 from the simplification audit) is still queued and will follow. The devframe-parity investigation also completed — happy to share that finding separately (you asked me to investigate before deciding).

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Generated by Claude Code