feat(#645): PDF export via window.print() with styled print template

[Shan7Usmani]

Description

Adds PDF export functionality to the meeting dashboard using window.print() with a clean, styled print template. Users can now export meeting summaries as PDF documents directly from the browser.

Changes

• dashboard.ts: Added generatePrintHTML() function that creates a print-friendly HTML document with all meeting sections (attendees, summary, topics, decisions, action items, insights, timeline, transcript)
• Added printPDF() function that opens a new window with the template and triggers window.print()
• Wired the existing header PDF button to the new functionality
• Print template includes @page CSS rules, clean typography, and section headers

Testing

• TypeScript compiles clean (tsc --noEmit)
• Existing tests pass

Fixes #645

[github-actions]

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Review details

⚙️ Run configuration

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📥 Commits

Reviewing files that changed from the base of the PR and between d216444 and 138c418.

📒 Files selected for processing (10)

• README.md
• src/background.ts
• src/dashboard.ts
• src/manifest.json
• src/offscreen.ts
• src/offscreenAudioGraph.ts
• src/utils/domHelpers.test.ts
• src/utils/sanitize.test.ts
• src/utils/sanitize.ts
• tests/offscreenAudioGraph.test.ts

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[github-actions]

👋 Thank you @Shan7Usmani for your contribution to Late-Meet!

✅ Verified: You are assigned to the linked issue #645.

Please review any automated suggestions or code review comments that may appear below! We will review your PR as soon as possible!

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[sonarqubecloud]

Quality Gate passed

Issues
4 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud