stack: TOC-Pflicht fuer Referenzdateien ueber 100 Zeilen (docs toc); session-setup.md/gates.md nennen die tatsaechliche Budget-Ausnahmeliste (schliesst #73, #76)

Files changed:
- AGENTS.md
- CHANGES.md
- VERSION
- instructions/CONTRACT.md
- instructions/capture-session.md
- instructions/claude-code-model-selection.md
- instructions/dev/issue-tracking.md
- instructions/dev/testing-conventions.md
- instructions/dev/version-parts.md
- instructions/evolve-subtypes.md
- instructions/gates.md
- instructions/german-terminology.md
- instructions/ingest-large-tree.md
- instructions/kb-profiles.md
- instructions/link-taxonomy.md
- instructions/mcp-read-server.md
- instructions/migrate-corpus.md
- instructions/migrations/3.0.0-authoring-conventions.md
- instructions/migrations/4.0.0-link-taxonomy.md
- instructions/private-instance.md
- instructions/session-setup.md
- instructions/setup-instance.md
- kb/CONTRACT.md
- kb/CONVENTIONS.md
- kb/concepts/COLLECTION.md
- raw/CONTRACT.md
- tools/CONTRACT.md
- tools/chemenu/commands/docs_verify.py
- tools/chemenu/commands/instructions_cmd.py
- tools/chemenu/tests/test_docs_verify.py
- tools/chemenu/tests/test_instructions_cmd.py
- tools/chemenu/tests/test_toc.py
- tools/chemenu/toc.py
- types/type-spec.md

instructions/gates.md

@@ -19,6 +19,17 @@ Read the exit code first - it says which of these applies:
 | 42 | User clearance required | Reproduce the command's output in your reply, stop. See below. |
 | 1 | Validation error, or a budget/loop refusal | Read the `ERROR` line; fix and retry once, or stop and escalate. |
 
+<!-- wikitool:toc -->
+## Contents
+
+- [Exit 42: user clearance required](#exit-42-user-clearance-required)
+  - [Publish-Remote Gate](#publish-remote-gate)
+  - [Mass-Update Gate blind spot: `upstream merge`](#mass-update-gate-blind-spot-upstream-merge)
+- [Iteration Budget Gate and loop-breaker](#iteration-budget-gate-and-loop-breaker)
+  - [Taking a new session id](#taking-a-new-session-id)
+- [Scope](#scope)
+<!-- /wikitool:toc -->
+
 ## Exit 42: user clearance required
 
 A `wikitool` command that exits **42** is not reporting an error. It is refusing to act until a
@@ -159,7 +170,11 @@ When it trips:
 at exactly the limit it is refused too. The only way past is `--override-budget` on the
 command you actually need to run, and only with the user's approval.
 
-`wikitool search` is exempt from this budget entirely: retrieval is reading, not iterating.
+A dozen commands are exempt from this budget entirely - `search` and `doctor` because retrieval
+and diagnosis are reading, not iterating, plus the read-only forms of `links`, `cite`, `budget`,
+`eval`, `version`, `migrate` and `upstream verify`. The exemption is that fixed allowlist in
+[tools/CONTRACT.md](../tools/CONTRACT.md), not a "does not change the wiki" rule of thumb: `lint`
+only writes to gitignored `reports/` and still counts, because it is not on the list.
 
 ### Taking a new session id