Checkpoint opt-in MangaDex parser worker

docs/scraper-service.md

@@ -7,23 +7,23 @@ proxy commands to its private HTTP API.
 
 ## First-party source parser pilot
 
-The WeebCentral parser is now a reviewed first-party module in
-`scraper/plugins/weebcentral.js`. By default it runs in the scraper process,
-preserving the existing deployment. To test process isolation in Compose, start
-the `source-plugins` profile and set `SOURCE_PLUGIN_URL` for the scraper to
-`http://source-plugin-weebcentral:8094` (for example via the Compose environment).
-Both settings are required; enabling the URL without a healthy worker causes
-WeebCentral discovery to fail closed and retain its checkpoint. Remove the URL
-to roll back. Do not restart a live scraper merely to try this option; use the
-normal checkpoint-safe deployment procedure.
+The WeebCentral and MangaDex parsers have reviewed first-party modules in
+`scraper/plugins/`. By default their existing in-process paths remain in use.
+To test process isolation in Compose, start the `source-plugins` profile and
+set `SOURCE_PLUGIN_URL=http://source-plugin-weebcentral:8094` and/or
+`MANGADEX_PLUGIN_URL=http://source-plugin-mangadex:8094` for the scraper.
+Each URL selects its source independently. A selected worker that is unavailable
+causes that source's discovery to fail closed and retain its checkpoint. Remove
+its URL to roll back. Do not restart a live scraper merely to try this option;
+use the normal checkpoint-safe deployment procedure.
 
-The worker has no published port, egress network, library/data mount, or token.
+Each worker has no published port, egress network, library/data mount, or token.
 Only the existing rate-limited scraper HTTP client fetches remote HTML/images.
 The worker accepts bounded HTML for four parsing steps over its internal-only
 network. It loads only modules listed in the static first-party registry; there
 is no runtime plugin download or execution of Uchiyomi packages. This is a
-parser-isolation pilot, **not yet** a complete generic source-plugin contract,
-or migration of the MangaDex runner. Parsed catalog and image URLs are checked
+parser-isolation pilot, **not yet** a complete generic source-plugin contract
+or migration of either archive runner. Parsed catalog and image URLs are checked
 before use, and parser requests/responses are size-bounded. When the worker is
 enabled, WeebCentral requests use a pinned-DNS HTTPS transport that validates
 each redirect and stops on access errors; the ordinary in-process path is not