feat: declare consumes: llm.chat@^0 (advisory)

Plans this module emits typically dispatch llm.chat steps
for downstream LLM-driven work. A flow that runs an
unmodified plan needs an llm.chat provider installed; the
hub now surfaces this as a 'consumes-advisory' warning at
install time so operators see the dependency hint without
the install being blocked.

See fai/platform commit e5ba892 for the platform-side
consumes: schema.

Signed-off-by: flemming-it <sf@flemming.it>

module.yaml

@@ -8,6 +8,16 @@ provides:
   - capability: orchestrator.plan
     version: 0.3.0
 
+# Capabilities the plans this module emits typically reference.
+# Advisory only — Studio surfaces "you'll also want X" when the
+# operator installs orchestrator-llm; `fai admin doctor` flags
+# unmet entries; the hub does NOT block install. See
+# docs/architecture/store.md → "Module dependencies".
+consumes:
+  - capability: llm.chat
+    version: "^0"
+    why: "orchestrator-emitted plans dispatch llm.chat steps for downstream LLM-driven work; a flow that runs the plan unmodified needs an llm.chat provider installed."
+
 # Inputs the invoke function accepts.
 inputs:
   goal: text