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

kb/CONVENTIONS.md

@@ -26,6 +26,18 @@ region `wikitool cite` owns. Each sits between a marker pair, and the marker is
 locates it by, so the heading here is a display value: changing it re-renders the words above
 those regions and nothing else. Nothing matches on this text.
 
+<!-- wikitool:toc -->
+## Contents
+
+- [Language](#language)
+  - [Section headings](#section-headings)
+- [Naming](#naming)
+- [Tone](#tone)
+- [Relationship labels](#relationship-labels)
+- [Confidence rubric](#confidence-rubric)
+- [Keeping this file honest](#keeping-this-file-honest)
+<!-- /wikitool:toc -->
+
 ## Language
 
 Pages are written in **German**. This binds `kb/` and the authoring surface that shapes it -