- capture.rs: add archive_id: Option<&str> to perform_capture; when Some,
call font_extractor::extract_and_rewrite before hashing HTML, register
each font as a deduplicated blob + 'font' artifact
- main.rs: pass None as archive_id (CLI keeps fonts embedded)
- routes.rs: add GET /api/archives/:id/blobs/:sha256 (serve_blob handler),
pass Some(&archive_id) to perform_capture in capture_handler,
add ApiError::internal constructor
- Add archivr-core/src/capture.rs: Source enum, all capture helpers,
fail_run (replaces process::exit fail_archive_and_exit), and
perform_capture() as the public entry point
- Slim archivr-cli/src/main.rs to 103 lines: thin adapter over
archivr_core::capture::perform_capture
- Move all source-classification and tweet-entry tests from CLI to
archivr-core/src/capture.rs (they test core logic, belong in core)
- Add POST /api/archives/:archive_id/captures route in archivr-server:
validates non-empty locator (400), resolves archive (404), delegates
to perform_capture, returns {run_uid, status}
- Add capture dialog to browser UI: dialog markup in index.html,
showModal/submit/cancel/loading/error wiring in app.js, dialog
styles in styles.css
- 77 tests pass, clean build (0 warnings)
