changelog: v3.0.0 baseline

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

CHANGELOG.md

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+# Changelog
+
+Notable changes to HBlink3. This is the first tagged release; it establishes a
+baseline of the current state rather than enumerating the project's full history.
+
+## [3.0.0] — 2026-07-12
+
+First tagged release. Highlights of the current state:
+
+### Reporting & dashboard (event-driven overhaul)
+- The daemon→dashboard feed is event-driven newline-delimited JSON. Repeater
+  connect/disconnect and live call events are pushed **as they happen**; the full
+  config/bridge state is resent only as a slow periodic resync + heartbeat (it used
+  to be a full push every interval).
+- Per-repeater **ping-loss** quality metric — surfaces a repeater that stays
+  connected but drops keepalive pings (a lossy link → choppy audio), self-calibrated
+  to each repeater's own ping cadence. Configured with `PING_LOSS_WINDOW` /
+  `PING_LOSS_WARN` in `[GLOBAL]`; the dashboard golds a repeater's callsign at/above
+  the warn threshold.
+- Canonical event vocabulary: `repeater_connected` / `repeater_disconnected`,
+  `stream_start` / `stream_end`.
+- **Unix-socket transport** for a same-host dashboard (`REPORT_TRANSPORT=unix` +
+  `REPORT_SOCKET`; dashboard side `HBLINK_TRANSPORT` / `HBLINK_SOCKET`), which
+  retires the silently-severed-link failure class for local dashboards. Remote (TCP)
+  dashboards gain TCP keepalive + a feed read-timeout so a dead link is detected.
+
+### OpenBridge configuration model — **breaking**
+- OpenBridge systems are configured in a per-OBP table
+  `OBP_BRIDGES = { <obp system> : { <bridge> : <TGID> } }` in `rules.py`, **not** as
+  inline `BRIDGES` members. OBP entries carry no ON/OFF/TIMEOUT triggers or real
+  timeslot (a trunk has no RF user to key them). The table doubles as the
+  fail-closed ingress/egress filter; a one-TGID-to-two-bridges fork is a startup
+  **ERROR**, a cross-OpenBridge renumber a **WARNING**.
+- Migration tool `tools/migrate_obp_rules.py` converts an old inline `rules.py`.
+
+### System-mode terminology — **breaking**
+- `MASTER` → **`SERVER`**, `PEER` / `CLIENT` → **`OUTBOUND`** (`OPENBRIDGE`
+  unchanged). Update the `MODE:` line of each stanza in `hblink.cfg`.
+
+### Documentation
+- README (with an upgrade warning), INSTALL, CONFIGURING, ACLS, and the dashboard
+  docs refreshed for all of the above.
+
+[3.0.0]: https://github.com/n0mjs710/hblink3/releases/tag/v3.0.0