Persistent JSON-backed call history for the direct-call screen so users
can see what they've placed / received / missed and dial back with one
click. Also fixes two small latent UX issues reported alongside.
Backend (Rust)
- new crate/module desktop/src-tauri/src/history.rs: thread-safe in-
process store (OnceLock<RwLock<Vec<CallHistoryEntry>>>) backed by
<APP_DATA_DIR>/call_history.json. Atomic writes via temp+rename. Max
200 entries, FIFO pruning. CallDirection { Placed, Received, Missed }.
- Log hooks in the signal loop + commands:
* place_call → Placed entry (with target fingerprint)
* DirectCallOffer → Missed entry up front; upgraded to Received
inside answer_call when accept_mode != Reject
via history::mark_received_if_pending(call_id).
If user rejects or never answers, it stays Missed.
- New Tauri commands:
* get_call_history() → all entries, newest first
* get_recent_contacts() → unique peers by fp, newest interaction first
* clear_call_history() → wipes JSON + in-memory
* deregister() → tears down signal transport + endpoint
Backend emits `history-changed` events so the UI can live-refresh
without polling.
Frontend (main.ts + index.html + style.css)
- Direct-call panel now has:
* Recent contacts chip row (top 6 unique peers). Click a chip → dial.
* Call history list (up to 50 rows). Direction icon (↗ placed, ↙
received, ✗ missed), peer alias/fp, relative timestamp, callback
button. Both click handlers populate target-fp and fire place_call.
* Deregister button in the "registered" header — calls the new
deregister command, tears down the signal transport, returns the
UI to the pre-register state.
* Clear-history link in the history header.
- Subscribes to `history-changed` events so the list updates the moment
the backend logs a new entry. Also refreshed on register + after a
clear.
- Nothing is rendered until there is data — empty sections stay hidden.
Tasks #20 + #21 (small UX items bundled in)
- Default room "general" for new installations: the html input value
attribute is now "general" and loadSettings() defaults match. Existing
users' localStorage still wins.
- Random alias on desktop: already latent but confirmed working — the
startup IIFE at main.ts:374 calls get_app_info() and prefills the
alias input from derive_alias(seed) when the input is empty. No code
change needed, just verified it flows through the same path as the
Android client.
Known follow-ups (deferred to step 6 polish)
- Call duration tracking (currently all entries have no duration field)
- Hangup signal from an unanswered incoming should emit history-changed
so the missed state is visible even when the user never tapped accept
- Android UI layout fit-check on the smaller Nothing screen
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