fix: preserve Streamlit work and remove obsolete docs

[ninedter]

What changed

• Run Streamlit-triggered PCAP analysis in the durable process-backed job queue.
• Restore progress and completed evidence after the page is stopped or reloaded.
• Persist bounded UI artifacts and support background report generation.
• Remove CLAUDE.md and its repository references.
• Remove the obsolete feature roadmap, Phase 4 implementation plan, and test plan.
• Remove local contributor-tooling state and tracked ignore references.

Why

The analysis previously ran inside Streamlit's page thread, so pressing Stop terminated active work. The removed internal documents and tool-specific repository metadata are no longer intended to be published with the application.

Validation

• make verify: 1,015 passed, 22 skipped
• make docker-verify: 1,015 passed, 22 skipped
• Repository-wide reference scan found no remaining current-tree references to the removed documents or tool-specific paths