v0.3.1 — Real session capture, Activity view, portable AppImages

Phase 1 of the post-audit wiring plan: every "pretends to work" feature now works end-to-end, plus a new observability home. All features GUI-verified on a second machine.

⚠️ Important: portable AppImage

The v0.3.0 AppImage was linked against the build host's glibc 2.43 and crashed on most distros with a misleading pty.node error. This release is built inside a Debian 11 container and runs on glibc ≥ 2.28 (Ubuntu 20.04+, Debian 11+, RHEL 8+). If v0.3.0 didn't start for you, this one will.

Highlights

• Session recording, for real — asciicast v2 with input+output, Capture menu, tab badge, blinking REC status-bar indicator, and a Recordings manager (asciinema play ready).
• Session logs — plain-text transcripts for SSH/local/Mosh with start/stop, plus a two-tab Session Captures browser (Capture menu & Preferences).
• Activity view (sidebar) — the audit log as a filterable day-grouped timeline (categories, search, 24h/7d/30d, live refresh, per-connection drill-down) with insights counters, rotation, and CSV/JSONL export.
• Tab reattach — a detached tab returns to the main window adopting the same live session.
• Pre/post-connection hooks now execute (audit-logged, with per-command confirmation).
• Dynamic (SOCKS5) tunnels — real RFC 1928 proxy per tunnel.
• Find in terminal (Ctrl+Shift+F), Clear/Reset wired; redesigned grouped context menu.
• Bilingual user guide under docs/guide/ (EN/ES), verified against the code.

Full details in CHANGELOG.md.

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