docs(ingest): Define manifest rules for model and maturity fields

skills/ingest/SKILL.md

@@ -52,7 +52,6 @@ append to the log/index, or open anything.
 ```json
 {
   "raw_source": "raw/articles/foo.md",
-  "model": "<the model you are running as>",
   "reasoning": "One sentence for the log: what changed and why.",
   "pr_summary": "One or two sentences describing this ingest for the PR.",
   "contradictions": "None   (or: 1 conflict file created — <concept>)",
@@ -66,7 +65,6 @@ append to the log/index, or open anything.
     {
       "path": "wiki/entities/acme.md",
       "summary": "Acme — vendor.",
-      "maturity": "draft",
       "status": "modified"
     }
   ]
@@ -78,6 +76,10 @@ Manifest rules:
 - List every page you created or modified, with `status` `created` or `modified`.
 - `summary` is the one-line index description (≈12 words max). For conflict pages the
   summary is ignored — the index lists conflicts by slug only.
+- `maturity` is required only on `created` pages (it seeds the new index entry). It is
+  ignored for `modified` pages, so omit it there.
+- Do NOT add a `model` field — the orchestrator records which model produced this run; you
+  cannot know your own model name reliably, so do not guess one.
 - Do not invent a `run_id`, branch, commit, or PR — those belong to the post-processor.
 
 One source per session. After writing the manifest, stop.