fix(tech): preserve h1 elements — do not strip first heading

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

pipelines/tech/SCHEMA.md

@@ -60,15 +60,14 @@ tags:
 
 ## Body
 
-Plain markdown. The renderer strips the first-line `# Heading` if present (it duplicates the wiki page title), then passes the body through Pandoc.
+Plain markdown. The body is passed through Pandoc as-is — the first-line `# Heading` is not stripped, so you can use h1 elements freely.
 
 ## Renderer behaviour
 
 For each `.md` with `wiki.publish: true`:
 
 1. Parse and validate frontmatter.
-2. Strip the leading `# Heading` from the body if present.
-3. Pipe the body through `pandoc -f markdown -t mediawiki`.
+2. Pipe the body through `pandoc -f markdown -t mediawiki`.
 4. Prepend the auto-generated banner: `{{Auto-generated|source=<source URL>|commit=<sha>}}`.
 5. Append category tags: `[[Category:Tech blog]]`; `[[Category:Blog:<year>]]` if `date` is set; `[[Category:<tag>]]` for each tag.
 6. Read the current wiki page content; if identical, skip the write (idempotency).
@@ -78,8 +77,7 @@ For each `.md` with `wiki.publish: true`:
 ## Implemented scope
 
 - Frontmatter parsing and validation
-- Pandoc-based markdown → wikitext rendering
-- First-line h1 stripping
+- Pandoc-based markdown → wikitext rendering (h1 elements preserved)
 - Banner template injection
 - `Category:Tech blog` on every published page
 - `Category:Blog:<year>` from `date` field