export: export run writes selected kb/ pages as a derived, read-only version into configured target folders (markdown and command handlers, manifest, after_publish), raw accept also refuses manifest-listed files, doctor checks the section (#214); 10.0.0-beta.13

Files changed:
- CHANGES.md
- VERSION
- docs/how-to/README.md
- docs/how-to/back-up-to-a-synced-folder.md
- docs/how-to/collect-from-a-synced-folder.md
- docs/how-to/export-guidelines.md
- docs/how-to/export-to-a-synced-folder.md
- docs/reference/commands/README.md
- docs/reference/commands/exports.md
- docs/reference/commands/git.md
- docs/reference/commands/guideline-export.md
- docs/reference/commands/instance-health.md
- docs/reference/commands/raw-material-and-uploads.md
- docs/reference/configuration.md
- docs/reference/exit-codes.md
- instructions/setup-instance.md
- raw/CONTRACT.md
- tools/CONTRACT.md
- tools/README.md
- tools/chemenu/backup.py
- tools/chemenu/cli_contract.py
- tools/chemenu/commands/doctor.py
- tools/chemenu/commands/export_cmd.py
- tools/chemenu/commands/git_publish.py
- tools/chemenu/commands/raw/_common.py
- tools/chemenu/commands/raw/accept.py
- tools/chemenu/commands/raw/capture.py
- tools/chemenu/config_shapes.py
- tools/chemenu/guideline_export.py
- tools/chemenu/page_export.py
- tools/chemenu/reference_doc.py
- tools/chemenu/repo_capture.py
- tools/chemenu/tests/test_config_shapes.py
- tools/chemenu/tests/test_export_run.py

Co-Authored-By: Claude Code <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01SnAJ7Z3CpVD3PRbN73QtU2

docs/how-to/collect-from-a-synced-folder.md

@@ -131,3 +131,7 @@ exits 0 with "nothing to collect".
 
 The agent does the same at the start of an ingest when you name no file: `upload collect`, then
 `upload list`, then a report of what waits. It never runs `upload accept` for you.
+
+The other direction - a read-only version of selected pages written out to a synced folder - is
+[Export pages to a synced folder](export-to-a-synced-folder.md). An export is never a source: the
+export marker keeps it out of `raw/`.