docs(FN-2432): refresh Fusion skill docs for current CLI and extension

- Update top-level Fusion skill guidance and capability descriptions to reflect current terminology and tool behavior
- Replace stale KB-* task examples with FN-* IDs across CLI reference, task structure, and workflow guides
- Refresh capability and workflow docs with current commands (including node runtime, skills, and comment guidance)
- Add a changeset for @runfusion/fusion documenting the shipped skill documentation refresh

packages/cli/skill/fusion/workflows/dashboard-cli.md

@@ -32,11 +32,11 @@ These cannot be done with pi extension tools:
 
 | Operation | CLI Command | Dashboard |
 |-----------|-------------|-----------|
-| Move task to column | `fn task move KB-001 todo` | Drag card between columns |
-| Merge completed task | `fn task merge KB-001` | Click merge in task detail |
-| Add steering comment | `fn task steer KB-001 "Use TypeScript"` | Comments tab in task detail |
-| Add general comment | `fn task comment KB-001 "Looks good"` | Comments tab in task detail |
-| View agent logs | `fn task logs KB-001 --follow` | Agent log tab in task detail |
+| Move task to column | `fn task move FN-001 todo` | Drag card between columns |
+| Merge completed task | `fn task merge FN-001` | Click merge in task detail |
+| Add steering comment | `fn task steer FN-001 "Use TypeScript"` | Comments tab in task detail |
+| Add general comment | `fn task comment FN-001 "Looks good"` | Comments tab in task detail |
+| View agent logs | `fn task logs FN-001 --follow` | Agent log tab in task detail |
 | Change settings | `fn settings set maxConcurrent 4` | Settings modal |
 | Create workflow steps | — | Workflow Steps button in header |
 | Git operations | `fn git status/fetch/pull/push` | Git manager panel |
@@ -60,7 +60,7 @@ Key settings (configure via dashboard Settings or `fn settings set`):
 
 When `prCompletionMode` is set to "pr-first":
 - Completed tasks create a GitHub PR instead of direct-merging
-- Use `fn task pr-create KB-001` to manually create a PR for any in-review task
+- Use `fn task pr-create FN-001` to manually create a PR for any in-review task
 - PRs can be reviewed and merged through the normal GitHub workflow
 
 **Backup operations:**

packages/cli/skill/fusion/workflows/specifications.md

@@ -94,11 +94,11 @@ For large-scale projects spanning multiple tasks, use the mission hierarchy:
    fn_slice_activate({ id: "SL-001" })
    ```
 
-6. **Link features to tasks** — Connect features to kb tasks
+6. **Link features to tasks** — Connect features to Fusion tasks
    ```
    fn_task_create({ description: "Create user model with email, password hash, and timestamps" })
-   # → Created KB-101
-   fn_feature_link_task({ featureId: "F-001", taskId: "KB-101" })
+   # → Created FN-101
+   fn_feature_link_task({ featureId: "F-001", taskId: "FN-101" })
    ```
 
 **Mission status flows automatically:**

packages/cli/skill/fusion/workflows/task-lifecycle.md

@@ -87,7 +87,7 @@ The AI triage agent sets the review level based on task complexity and risk asse
 **Interpreting `fn_task_show` output:**
 
 ```
-KB-042: Fix login validation
+FN-042: Fix login validation
 Column: In Progress · Size: M · Review: 2
 
 Steps (2/5):

packages/cli/skill/fusion/workflows/task-management.md

@@ -29,7 +29,7 @@ Example:
 ```
 fn_task_create({
   description: "The login form doesn't validate email format before submission. Add client-side email validation that shows an inline error message when the email is invalid. Use the existing form validation pattern from the signup form.",
-  depends: ["KB-042"]
+  depends: ["FN-042"]
 })
 ```