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

types/type-spec.md

@@ -9,6 +9,23 @@ schema: types/type-spec.schema.yaml
 
 A type-spec doc is the authoring and validation contract for one Chemenu artifact type. Artifact frontmatter stores the repo-relative path to this doc in `type:`, and this file serves several consumers differently: an author writing a new instance reads it for what to write, someone unfamiliar with the type reads it for what to expect from an instance before opening one, and the validator and the type-conformance reviewer read it to check conformance.
 
+<!-- wikitool:toc -->
+## Contents
+
+- [Required Frontmatter](#required-frontmatter)
+- [Validation Contract](#validation-contract)
+- [Writing Shape](#writing-shape)
+- [The type layer](#the-type-layer)
+  - [Who owns a type-spec](#who-owns-a-type-spec)
+  - [Anatomy of a type](#anatomy-of-a-type)
+  - [Placement frontmatter](#placement-frontmatter)
+  - [Adding a type](#adding-a-type)
+  - [Template variables](#template-variables)
+  - [Ownership boundary](#ownership-boundary)
+  - [What does not belong here](#what-does-not-belong-here)
+- [Template](#template)
+<!-- /wikitool:toc -->
+
 ## Required Frontmatter
 
 - `type`: `types/type-spec.md`. The root type spec is self-referential and uses the same value.
@@ -208,4 +225,4 @@ Relevant Notes:
 
 - This is the root type-spec that all other type-specs reference
 - Type-specs form the structural backbone of the wiki's type system
-- All validation flows through type-spec definitions
+- All validation flows through type-spec definitions