Release Subtitle Tools 0.1.0

docs/ACCESSIBILITY.md

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+# Accessibility
+
+The application uses labelled native controls, keyboard-reachable tabs and cue
+buttons, visible focus indicators, text alternatives for waveform content, and
+light, dark and system themes. Colour is not the only carrier for issue level.
+The cue and issue views cap rendered rows to keep navigation responsive while
+the complete bounded document remains included in validation and export.
+
+The waveform is an optional visual aid: all timing edits use numeric controls and
+do not require pointer input. Reduced-motion preferences disable transitions.

docs/ARCHITECTURE.md

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+# Architecture
+
+Subtitle Tools is a relocatable React application with a framework-independent
+TypeScript subtitle model. The parser first applies byte/text and line bounds,
+then produces one normalized cue model for SRT, WebVTT and ASS. Operations return
+new documents instead of mutating parser state. Serializers are format-specific;
+cross-format export deliberately exposes its preservation boundary.
+
+Parsing and timing transformations are synchronous in v0.1 and therefore capped
+at 4,000,000 UTF-16 units, 250,000 units per physical line and 100,000 cues. The
+editor renders at most 10,000 cue rows and 2,000 issue rows, while validation and
+export still cover the complete bounded document. Revision comparison is
+index-aligned and linear rather than an unbounded semantic diff.
+
+The optional waveform component uses browser-native media decoding, keeps at
+most 2,000 peak buckets and accepts no more than 128 MiB or four decoded hours.
+It does not run a codec, speech-recognition model or network service.

docs/PRIVACY-SECURITY.md

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+# Privacy and security
+
+Subtitle and media files are read only after direct selection and stay in page
+memory. No telemetry, analytics, account, upload, external font, codec, model or
+other network destination exists. The production policy uses
+`connect-src 'self'`; browser tests fail on non-local requests.
+
+Subtitle text is rendered by React as text, not interpreted as HTML. ASS override
+codes and WebVTT tags are preserved as inert source. Exports are downloads chosen
+by the user. Browser-native media playback and Web Audio decoding inherit browser
+codec support and may allocate substantial memory inside the documented bounds.
+
+Validation findings are editorial signals. They are not proof of accessibility,
+broadcast conformance, synchronization quality or legal compliance. Cross-format
+conversion can discard styles, positioning, regions, comments and metadata.