docs: fix openspec status examples in cli.md (Fission-AI#761)

* docs: fix `openspec status` examples in cli.md to match actual CLI output

The text and JSON output examples for the status command used incorrect
field names, indicators, and structure. Updated to match real CLI output,
validated against a test project with partial artifacts.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* chore: remove spec change and changeset for docs-only fix

Per reviewer feedback — docs fixes don't need a spec change or
version bump.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
Co-authored-by: Tabish Bidiwale <30385142+TabishB@users.noreply.github.com>

Author: 3 people

docs/cli.md

@@ -437,29 +437,28 @@ openspec status --change add-dark-mode --json
 ```
 Change: add-dark-mode
 Schema: spec-driven
+Progress: 2/4 artifacts complete
 
-Artifacts:
-  ✓ proposal     proposal.md exists
-  ✓ specs        specs/ exists
-  ◆ design       ready (requires: specs)
-  ○ tasks        blocked (requires: design)
-
-Next: Create design using /opsx:continue
+[x] proposal
+[ ] design
+[x] specs
+[-] tasks (blocked by: design)
 ```
 
 **Output (JSON):**
 
 ```json
 {
-  "change": "add-dark-mode",
-  "schema": "spec-driven",
+  "changeName": "add-dark-mode",
+  "schemaName": "spec-driven",
+  "isComplete": false,
+  "applyRequires": ["tasks"],
   "artifacts": [
-    {"id": "proposal", "status": "complete", "path": "proposal.md"},
-    {"id": "specs", "status": "complete", "path": "specs/"},
-    {"id": "design", "status": "ready", "requires": ["specs"]},
-    {"id": "tasks", "status": "blocked", "requires": ["design"]}
-  ],
-  "next": "design"
+    {"id": "proposal", "outputPath": "proposal.md", "status": "done"},
+    {"id": "design", "outputPath": "design.md", "status": "ready"},
+    {"id": "specs", "outputPath": "specs/**/*.md", "status": "done"},
+    {"id": "tasks", "outputPath": "tasks.md", "status": "blocked", "missingDeps": ["design"]}
+  ]
 }
 ```