v1.4.2

• feat: adding new functions to start page 2, adding more functions to jellyfin/plex connectivity (incl. an "Your Profile"), fix some bugs, adding Feature from #26
• feat: add PyPI dependency preflight before a docker code update
• feat: add POST /api/update/docker-preflight (admin only)
• feat: add detail.docker_code_update telemetry data point
• feat: hide the release banner when that version is already installed
• feat: offer a retry button and readable reasons when comic preparation fails
• feat: announce versions with a release banner and a collapsible changelog box
• feat: link release posts straight to the settings updates tab
• feat: show a non-dismissible home page modal for important dev infos
• fix: bound every generated SQL list to a fixed size & issues on Main Menu Shortcuts
• fix: mobile list rows, integration badges, drop duplicate Auto-Sync path control
• fix: many style fixes, separation for Instance and profile settings and a fix for #26
• fix: refuse a docker code update on a dev install even when no channel is sent
• fix: reject docker code updates on the dev channel and on read-only venvs
• fix: re-read the cache sizes when the library settings tab is opened
• fix: distinguish an unmeasurable cache from an empty one in the settings
• fix: let cached covers revalidate so clearing the cache actually takes effect
• fix: rebuild comic cover URLs after preparation instead of reusing a cached 404
• fix: bump the cover cache-buster even when no card was marked stale
• fix: send no-store on a cover that does not exist yet, for comics and books
• fix: try every available extractor instead of only the first installed one
• fix: fall back to another tool when the peek cannot list a comic archive
• fix: forget circumstantial comic conversion failures after a minute, not an hour
• fix: let an explicit prepare request retry instead of replaying a cached failure
• fix: offer the prepare button when a comic conversion failed for a retryable reason
• fix: clear cover spinners when preparation finishes and only show them where a cover is missing
• fix: detect a finished comic conversion instead of polling a field the API never sends
• fix: restart a lost comic conversion request instead of waiting out the deadline
• fix: stop flagging comics as unprepared once their converted copy exists
• fix: style fix for specific checkboxes
• fix: key dev info read state on the server uid instead of the reusable row id
• perf: prefer the extractor that last succeeded for a format
• docs: document container updates in the README
• docs: document dev info post types in the wiki (EN/DE)
• style: adding flags to language buttons and correct styles. Also adding language as default for new accounts
• style: rework the language availability pills
• style: replace update overlay ring spinner with 9-square fade loader
• test: cover the release-banner suppression rules
• test: cover extractor fallback, promotion and failure-cache behaviour
• security: per-install device credential and signed requests
• security: backup atomicity, telemetry leaks, direct-link SSRF, HLS temp dir
• security: reject pre-release and non-dotted target versions for docker code updates
• security: validate the target version against a strict PEP 440 regex and resolve it server-side only
• security: reject non-http(s) release URLs before they reach an href