chore(packages): publish the @openmaic/* SDK family to npm (#778) (#780)

* chore(packages): publish the @openmaic/* SDK family to npm (#778)

Prepares the @openmaic/{dsl,renderer,importer} family for its first npm
publish, and moves the SDK packages onto the @openmaic scope.

Why the scope move: the @maic org name is unavailable on npm (an unscoped
`maic` package already holds the name), so @maic/* is not claimable. @openmaic
matches the project name, the scope is free, and the repo already ships an
@openmaic/docs package — so the SDK family now lines up with that convention.

- rename @maic/{dsl,renderer,importer} -> @openmaic/* across packages, the
  workspace glob, the package dir, and all import sites; lockfile regenerated
- renderer: add publishConfig (public, registry.npmjs.org) — was missing, so
  a scoped publish would default to the wrong registry / restricted access
- importer: add a files allowlist (dist, README, LICENSE) and drop the
  fragile .npmignore blacklist that shipped src; add an exports map so ESM
  consumers resolve dist/index.js instead of falling back to the .cjs main
- all three: add a prepublishOnly build (+ test/typecheck) guard so a publish
  can never ship a stale or empty dist
- add a tag-triggered publish workflow with npm provenance, pinned by name to
  the three @openmaic packages so the vendored forks (mathml2omml, pptxgenjs)
  are never published

Refs #778, #720 (Phase 1).

* fix(packages): address cross-review on the @openmaic publish prep

Cross-review (Claude /code-review + codex) on this PR surfaced:

- renderer's advertised CJS entry was broken: it keeps @openmaic/dsl external
  and imports a runtime enum from it, but dsl is ESM-only (no `require`
  condition), so `require('@openmaic/renderer')` would throw
  ERR_PACKAGE_PATH_NOT_EXPORTED. Make renderer ESM-only: drop the `.cjs`
  rollup output, `main` now points at the ESM build, and the `require`
  conditions are removed from `exports`. (importer is unaffected — it bundles
  dsl, so its CJS build still works.)
- prepublishOnly re-ran the test suite during `pnpm -r publish`, so a flaky
  test after dsl had already published gave a non-atomic partial release.
  Reduce prepublishOnly to a build-only guard (never ship stale/empty dist)
  and move the real test/typecheck gate into the workflow, before any publish.
- document that an @openmaic/* tag publishes the whole family via `pnpm -r`
  (pnpm skips already-published versions); the tag is a release marker, not a
  per-package gate.

Verified: dsl + renderer + importer build; renderer emits ESM only (0 .cjs),
all exports entries resolve; `npm pack` ships dist + README + LICENSE with no
src leak; frozen-lockfile passes.

Refs #778.

* style: reflow @openmaic/dsl type imports past print-width after rename

The @maic -> @openmaic rename lengthened two single-line type imports past
prettier's 100-col width; prettier --check flagged them. Pure formatting.

Refs #778.

* docs(importer): mark @openmaic/importer browser-only (cr-loop accepted limitation)

codex cross-review flagged that the published @openmaic/importer throws
`XMLHttpRequest is not a constructor` when loaded in a pure Node process —
its rollup build is browser-targeted (`nodeResolve({browser:true})` + a
browser pdf.js build). The app only consumes it client-side ('use client'),
so this is by design. Document it as an accepted limitation: prominent
browser-only note in the README and a `browser` field in the manifest.

Refs #778.

eval/whiteboard-layout/capture.ts

@@ -1,5 +1,5 @@
 import { chromium, type Browser, type Page } from '@playwright/test';
-import type { PPTElement } from '@maic/dsl';
+import type { PPTElement } from '@openmaic/dsl';
 import { mkdirSync } from 'fs';
 import { join } from 'path';
 

eval/whiteboard-layout/state-manager.ts

@@ -3,7 +3,7 @@ import { useCanvasStore } from '@/lib/store/canvas';
 import { useWhiteboardHistoryStore } from '@/lib/store/whiteboard-history';
 import { ActionEngine } from '@/lib/action/engine';
 import type { Action } from '@/lib/types/action';
-import type { PPTElement } from '@maic/dsl';
+import type { PPTElement } from '@openmaic/dsl';
 import type { Stage, Scene } from '@/lib/types/stage';
 
 interface InitialState {

eval/whiteboard-layout/types.ts

@@ -1,4 +1,4 @@
-import type { PPTElement } from '@maic/dsl';
+import type { PPTElement } from '@openmaic/dsl';
 import type { Stage, Scene } from '@/lib/types/stage';
 
 // ==================== Scenario ====================