feat(FN-1685): normalize changeset frontmatter and fix test expectations

- Remove unnecessary name fields from changeset files that reference @fusion/* packages
- Fix experimentalFeatures test expectation to match actual merge behavior
- Update test description to clarify merge vs replace semantics

.changeset/multi-project-migration.md

@@ -1,5 +1,4 @@
 ---
-"@fusion/core": minor
 "@gsxdsm/fusion": minor
 ---
 

.changeset/rename-data-directory.md

@@ -1,8 +1,5 @@
 ---
 "@gsxdsm/fusion": minor
-"@fusion/core": minor
-"@fusion/dashboard": minor
-"@fusion/engine": minor
 ---
 
 Rename project storage to `.fusion/fusion.db` and global storage to `~/.pi/fusion`.

.changeset/rename-environment-variables.md

@@ -1,6 +1,5 @@
 ---
 "@gsxdsm/fusion": minor
-"@fusion/dashboard": patch
 ---
 
 Rename environment variables from KB_* to FUSION_* prefix

.changeset/rename-internal-packages.md

@@ -1,8 +1,5 @@
 ---
 "@gsxdsm/fusion": patch
-"@fusion/core": patch
-"@fusion/dashboard": patch
-"@fusion/engine": patch
 ---
 
 Rename internal packages from @kb/* to @fusion/* namespace

.changeset/rename-task-prefix-and-branches.md

@@ -1,7 +1,4 @@
 ---
-"@fusion/core": minor
-"@fusion/dashboard": minor
-"@fusion/engine": minor
 "@gsxdsm/fusion": minor
 ---
 

.changeset/rename-task-prefix-branch.md

@@ -1,8 +1,5 @@
 ---
 "@gsxdsm/fusion": minor
-"@fusion/core": minor
-"@fusion/dashboard": minor
-"@fusion/engine": minor
 ---
 
 Rename default task ID prefix from KB to FN and branch naming from kb/ to fusion/

.changeset/sync-openrouter-models-on-dashboard-startup.md

@@ -1,7 +1,5 @@
 ---
 "@gsxdsm/fusion": patch
-"@fusion/core": patch
-"@fusion/dashboard": patch
 ---
 
 Add `openrouterModelSync` setting (default: true) to control whether the dashboard fetches the latest OpenRouter model catalog at startup. Toggled in Settings → Models. This fixes the model picker not showing the latest OpenRouter models because the `pi-openrouter-realtime` extension only syncs on `session_start` events (TUI-only).

.changeset/update-documentation-references.md

@@ -1,8 +1,5 @@
 ---
 "@gsxdsm/fusion": patch
-"@fusion/core": patch
-"@fusion/dashboard": patch
-"@fusion/engine": patch
 ---
 
 Update documentation and remaining references for Fusion rebrand

packages/core/src/store.test.ts

@@ -1210,6 +1210,7 @@ describe("TaskStore", () => {
 
       const settings = await store.getSettings();
       // Note: updateSettings merges experimentalFeatures, preserving existing features
+      // To replace entirely, pass null for experimentalFeatures first, then the new object
       expect(settings.experimentalFeatures).toEqual({ "feature-a": true, "feature-b": true });
     });