feat(apps): split platform apps into one-app packages (ADR-0048)

.changeset/adr-0048-split-account-app.md

@@ -0,0 +1,12 @@
+---
+"@objectstack/account": minor
+---
+
+feat(apps): reclaim `@objectstack/account` for the console Account app (ADR-0048)
+
+Removes the deprecated standalone account-portal SPA (`apps/account`) and
+reclaims the `@objectstack/account` name for the console Account app as its own
+ObjectStack package (`com.objectstack.account`, namespace `account`) per
+ADR-0048 "one app per package". Boot-neutral skeleton (transitional import from
+platform-objects; not yet wired into the dev/serve plugin set — that switch
+lands in a follow-up verified against a live `os dev` boot).

.changeset/adr-0048-split-setup-app.md

@@ -0,0 +1,12 @@
+---
+"@objectstack/setup": minor
+---
+
+feat(apps): extract Setup into its own `@objectstack/setup` app package (ADR-0048)
+
+ADR-0048 "one app per package": Setup gets a distinct package id
+(`com.objectstack.setup`) and namespace (`setup`), carrying both `SETUP_APP` and
+its baseline `SETUP_NAV_CONTRIBUTIONS`, so `/apps/<packageId>` resolves
+unambiguously. Boot-neutral skeleton (transitional import from platform-objects;
+not yet wired into the dev/serve plugin set — that switch lands in a follow-up
+verified against a live `os dev` boot).

.changeset/adr-0048-split-studio-app.md

@@ -0,0 +1,16 @@
+---
+"@objectstack/studio": minor
+---
+
+feat(apps): extract Studio into its own `@objectstack/studio` app package (ADR-0048)
+
+ADR-0048 "one app per package": Studio gets a distinct package id
+(`com.objectstack.studio`) and namespace (`studio`) so `/apps/<packageId>`
+resolves unambiguously instead of being lost inside a multi-app package.
+
+This change adds the package skeleton (`packages/apps/studio`) with a thin
+registration plugin. Transitional: `STUDIO_APP` is still imported from
+`@objectstack/platform-objects/apps`, and the package is not yet wired into the
+dev/serve plugin set — that boot-path switch (and dropping the app from
+`plugin-auth`'s manifest) lands in a follow-up so it can be verified against a
+live `os dev` boot.

.changeset/config.json

@@ -24,6 +24,8 @@
       "@objectstack/observability",
       "@objectstack/formula",
       "@objectstack/platform-objects",
+      "@objectstack/studio",
+      "@objectstack/setup",
       "@objectstack/runtime",
       "@objectstack/rest",
       "@objectstack/driver-memory",