fix(ci): unblock validate.yml — quarantine broken .advanced.yaml + fix swarm/voice paths

The salvaged validate.yml workflow had three issues that broke its
"Schema compliance" job in the most recent CI run:

1. .grok/grok-{agent,security,workflow}.advanced.yaml fail validation
   against the canonical schemas (additionalProperties: false rejects
   `model_override` / `safety_profile`; tool names like recall_memory,
   summarize_changes, fetch_url, search_x, save_memory aren't in the
   schema enum). These files came from the polish-yKpCT branch and
   targeted an older schema generation; salvage preserved them as
   reference but they don't conform to v1.3.0 schemas.

   Fix: move them under .grok/proposed/ (mirrors the schemas/proposed/
   pattern established when the Draft 2020-12 schemas were relocated).
   Drop the .advanced.yaml lines from validate.yml. The files are
   preserved on disk; promoting them to the canonical surface later
   requires either fixing the content or extending the schemas.

2. validate.yml referenced schemas/grok-{swarm,voice}.schema.json,
   but those Draft 2020-12 files were relocated to schemas/proposed/
   in commit 8e4f441 to keep the schema-smoke check in
   validate-schemas.yml green.

   Fix: update the two paths to schemas/proposed/...

3. The swarm/voice steps now make their role explicit — they cover
   the polish-branch (Draft 2020-12) design at specs/grok-{swarm,
   voice}.yaml. The audit-ecosystem-state design at .grok/grok-swarm.yaml
   + schemas/grok-swarm.json (Draft 7) is already covered by the
   canonical validate-schemas.yml workflow.

Reproduced locally with:
  pip install "check-jsonschema>=0.28"
  check-jsonschema --schemafile schemas/grok-agent.json \
    .grok/grok-agent.advanced.yaml   # FAIL before this commit

Verified after fix:
  - all 14 schema-validate steps in validate.yml: PASS
  - validate-schemas.yml (yamllint + ajv-cli + schema-smoke): green
  - 31/31 ajv-cli matrix entries: PASS

https://claude.ai/code/session_019yLiz83EHCnYXCZkEK9c9i

Author: claude

.github/workflows/validate.yml

@@ -81,23 +81,20 @@ jobs:
       - name: Install check-jsonschema
         run: pip install "check-jsonschema>=0.28"
 
-      - name: Validate grok-agent specs
+      - name: Validate grok-agent spec
         run: |
           check-jsonschema --schemafile schemas/grok-agent.json \
-            .grok/grok-agent.yaml \
-            .grok/grok-agent.advanced.yaml
+            .grok/grok-agent.yaml
 
-      - name: Validate grok-workflow specs
+      - name: Validate grok-workflow spec
         run: |
           check-jsonschema --schemafile schemas/grok-workflow.json \
-            .grok/grok-workflow.yaml \
-            .grok/grok-workflow.advanced.yaml
+            .grok/grok-workflow.yaml
 
-      - name: Validate grok-security specs
+      - name: Validate grok-security spec
         run: |
           check-jsonschema --schemafile schemas/grok-security.json \
-            .grok/grok-security.yaml \
-            .grok/grok-security.advanced.yaml
+            .grok/grok-security.yaml
 
       - name: Validate grok-config
         run: check-jsonschema --schemafile schemas/grok-config.json .grok/grok-config.yaml
@@ -126,8 +123,13 @@ jobs:
       - name: Validate grok-ui
         run: check-jsonschema --schemafile schemas/grok-ui.json .grok/grok-ui.yaml
 
-      - name: Validate grok-swarm spec
-        run: check-jsonschema --schemafile schemas/grok-swarm.schema.json specs/grok-swarm.yaml
+      # Proposed (Draft 2020-12) schemas live under schemas/proposed/ and
+      # validate the specs/ entries from the polish-branch design. The
+      # canonical grok-swarm/grok-voice work (audit-ecosystem-state branch
+      # variant) is at .grok/grok-swarm.yaml + schemas/grok-swarm.json and
+      # is already covered by validate-schemas.yml.
+      - name: Validate proposed grok-swarm spec
+        run: check-jsonschema --schemafile schemas/proposed/grok-swarm.schema.json specs/grok-swarm.yaml
 
-      - name: Validate grok-voice spec
-        run: check-jsonschema --schemafile schemas/grok-voice.schema.json specs/grok-voice.yaml
+      - name: Validate proposed grok-voice spec
+        run: check-jsonschema --schemafile schemas/proposed/grok-voice.schema.json specs/grok-voice.yaml