codegen-patch: real .ts templates, AST splice anchors, watch-mode dev orchestration

[dogmar]

Summary

Two themes, one branch:

1. Refactor codegen-patch.ts to read real .ts template files instead of joined string arrays. The static body of every block spliced into Panda's css.d.ts / css.mjs now lives in real TypeScript files under packages/bearbones-vite/src/templates/. Editors highlight them as TS, reviewers see meaningful diffs, and a small renderer fills in the two dynamic bits (utility-name union members + condition-vocabulary map entries) via sentinel substitution. Splice points in Panda's emit are located by AST shape (@babel/parser + magic-string, both already runtime deps) instead of exact-string match, so benign whitespace / quote-style / comment drift no longer breaks the patch. Snapshot stability is enforced by piping the patched output through oxfmt before comparison; new fixtures cover the AST-locator robustness.

2. Make vp run dev from the workspace root pick up template / source edits in @bearbones/vite automatically. A single dev task in the root vite.config.ts declares dependsOn: [\"@bearbones/vite#build\", \"@bearbones/preset#build\"] to pre-build every workspace dist the website's Vite/Panda config loaders import at config-load time, then launches @bearbones/vite#dev and website#dev in parallel via explicit vp run pkg#task invocations. @bearbones/vite's pack uses clean: !process.argv.includes(\"--watch\") so real one-shot builds still wipe stale output but watch mode atomically overwrites the bundle the dependsOn pre-build just produced — no consumer race. Pure vite-plus task orchestration; no shell tricks.

Key design choices (why this is a few commits, not one)

• Templates as data, not code. The .ts files in src/templates/ are excluded from this package's tsconfig + lint config — they reference types that only exist in Panda's emitted directory layout. Each carries @ts-nocheck and eslint-disable directives above a // ---bearbones-template-emit-below--- fence; the renderer strips everything up to the fence so those template-author directives never reach Panda's emitted output.
• No runtime fs reads. Originally the loader used fs.readFileSync(new URL('./templates/...', import.meta.url)), but Panda's config loader bundles consumers via esbuild and may emit CJS, which strips import.meta.url to an empty string and throws Invalid URL. Templates are now inlined into src/templates.generated.ts (gitignored) by scripts/generate-templates.mjs and the loader just imports the constants. The bundle has zero runtime import.meta.url references.
• Plugin gates regen on real template changes. The inlineTemplatesPlugin in packages/bearbones-vite/vite.config.ts runs gen only when watchChange fires for a file in src/templates/ (tracked via a pendingGen flag), not on every buildStart. Without this, the plugin wrote templates.generated.ts on every build — and since that file is imported by codegen-templates.ts, rolldown's import-graph watcher saw the write as a change → infinite rebuild loop.
• AST splice locator uses already-installed deps. @babel/parser and magic-string are both already runtime deps of this package (used by transform.ts), so the AST swap added no new dep weight.

What changed

Area	Files
Templates (new)	packages/bearbones-vite/src/templates/{css-d-ts-injected,css-d-ts-marker,css-mjs-marker-stub}.ts
Loader / renderer / AST locator (new)	src/codegen-templates.ts, src/codegen-patch-render.ts, src/codegen-patch-ast.ts
Build-time gen script (new)	scripts/generate-templates.mjs
Refactored	src/codegen-patch.ts (270 → 176 lines, orchestration only)
Tests	tests/codegen-patch.test.ts (oxfmt normalization, AST-drift fixtures, loadTemplate contract); snapshot re-baselined
Build / dev wiring	packages/bearbones-vite/vite.config.ts, root vite.config.ts, root package.json, tsconfig.json

Test plan

• vp test in packages/bearbones-vite — 65/65 pass (3 test files)
• vp check — formatter, linter, type-check all clean
• vp pack — bundle produced; dist/index.mjs has zero runtime import.meta.url refs (only doc-comment mentions)
• Smoke-test bundled module in Node — patchCssArtifact runs; marker block + condition map present
• vp run dev from worktree root — dev server up at localhost:5173, zero Failed to resolve errors, zero rebuild loops; bearbones-vite watch and panda steady state
• Live template edit during vp pack --watch — exactly 2 rebuilds, then steady (one for the source change, one as rolldown's import-graph picks up the regen-written file)
• AST-drift fixtures (whitespace / alt quote style / comment in Panda's emit) — splice still locates correctly
• Reviewer pass on the split between the two themes (codegen-patch refactor + dev orchestration); reasonable to land together since the dev wiring exists because the templates need a build/watch pipeline