feat: add shared dialog capture

[konard]

Summary

Fixes #141.

• Adds web-capture shared-dialog <url> and GET /shared-dialog?url=<URL> to both JavaScript and Rust implementations.
• Decodes ChatGPT share pages from embedded linear_conversation data, omits visually hidden turns, and emits provider/source URL/capture method/conversation id/title/ordered turns/evidence/diagnostics.
• Returns structured unsupported diagnostics for blocked or unavailable providers, including the Google AI Mode share interstitial case from the issue.
• Supports json, meta-language, demo-memory, markdown/md, txt/text, and html output formats.
• Documents the FormalAI shared-dialog contract and adds issue Capture replayable shared-dialog transcripts from AI share URLs #141 fixtures for reproducible parser coverage.

Reproduction and Regression Coverage

• ChatGPT fixture for https://chatgpt.com/share/6a3825b9-8de4-83ee-9c24-52fd1eb38d24 verifies exactly 4 visible turns from linear_conversation with stable roles/content/evidence.
• Google AI Mode fixture for https://share.google/aimode/VG0HhpnAXrBkC0QgP verifies an unsupported result with provider_challenge_interstitial diagnostics instead of a fabricated transcript.
• CLI regression coverage verifies web-capture shared-dialog <url> --format demo-memory -o - writes clean structured stdout even when .lenv is loaded.
• Node 24.17 process e2e coverage verifies /stream preserves safe identity Content-Length and avoids the CI ERR_STREAM_PREMATURE_CLOSE regression.
• The shared-dialog Links Notation schema is kept local to web-capture for JS/Rust parity; upstream meta-language currently publishes the latest package as a Rust crate but not as an npm package.

Verification

• cd js && npm run lint
• cd js && npm run format:check
• cd js && npm run check:duplication
• cd js && CI=true GITHUB_ACTIONS=true npx -y [email protected] --experimental-vm-modules ./node_modules/.bin/jest --runTestsByPath tests/e2e/process.test.js tests/unit/stream.test.js --runInBand --detectOpenHandles
• cd js && CI=true GITHUB_ACTIONS=true npx -y [email protected] --experimental-vm-modules ./node_modules/.bin/jest --testPathIgnorePatterns="docker.test.js"
• cd js && npm test -- tests/e2e/docker.test.js
• cd rust && cargo fmt --all -- --check
• cd rust && cargo clippy --all-targets --all-features -- -D warnings
• cd rust && cargo test --all-features --verbose
• cd rust && cargo test --doc --verbose
• node scripts/validate-changeset.mjs
• node scripts/check-publishable-changes.mjs
• node scripts/check-js-rust-parity.mjs
• Real ChatGPT smoke: JS and Rust shared-dialog ... --capture api --format json -o - both return status: ok with 4 turns.
• Current-head CI for 78225bc: JavaScript Checks and Release, Rust Checks and Release, and JS/Rust Parity all passed.

[konard]

Working session summary

Implemented and finalized PR 142: #142

Current head is 78225bc on issue-141-f649a07590ac. I fixed the CI-only /stream regression by preserving safe identity Content-Length on streamed responses, which resolves the Node 24.17 ERR_STREAM_PREMATURE_CLOSE failure.

Verified locally:

• JS lint, format, duplication
• Node 24.17 focused /stream process e2e + unit test
• Node 24.17 full non-Docker JS suite
• Docker e2e

Current-head CI is green for JavaScript, Rust, and JS/Rust parity. PR 142 is now marked ready for review, and the working tree is clean.

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This summary was automatically extracted from the AI working session output.

[konard]

🤖 Solution Draft Log

This log file contains the complete execution trace of the AI solution draft process.

💰 Cost estimation:

• Model: GPT-5.5
• Provider: OpenAI
• Public pricing estimate: $80.327119

📊 Context and tokens usage:

• 1.9M / 200K (949%) input tokens, 184.9K / 128K (144%) output tokens

Total: (1.9M + 53.0M cached) input tokens, 184.9K output tokens, $80.327119 cost

🤖 Models used:

• Tool: OpenAI Codex
• Requested: gpt-5.5
• Thinking level: max (~31999 tokens)
• Model: GPT-5.5 (gpt-5.5)

📎 Log file uploaded as Gist (18428KB)

• View complete solution draft log

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Now working session is ended, feel free to review and add any feedback on the solution draft.

[konard]

✅ Ready to merge

This pull request is now ready to be merged:

• All CI checks have passed
• No merge conflicts
• No pending changes

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