docs: mark current hardware baseline as v0.7.0-pre

CHANGELOG.md

@@ -1,5 +1,9 @@
 # Changelog
 
+## v0.7.0-pre
+
+Hardware bring-up milestone: live RDS now decodes on PlutoSDR, with stabilized sample-rate handling, persistent DSP state, and phase-coherent MPX/RDS integration.
+
 ## v0.6.0-pre
 
 Hardware integration: SoapySDR CGO binding, IQ resampling, TX CLI mode.

README.md

@@ -2,7 +2,7 @@
 
 Go-based FM stereo transmitter with RDS. Supports ADALM-Pluto (PlutoSDR) and any SoapySDR-compatible TX device.
 
-## Status: v0.6.0-pre — Hardware-ready
+## Status: v0.7.0-pre — hardware bring-up milestone
 
 ### What works
 - Complete DSP chain: pre-emphasis → stereo encoding → RDS (IEC 62106) → MPX → limiter → FM modulation

RELEASE.md

@@ -1,8 +1,15 @@
-# Release Notes — v0.6.0-pre
+# Release Notes — v0.7.0-pre
 
-## Hardware-ready milestone
+## Hardware bring-up milestone
 
-The system is now ready for first real hardware TX tests with ADALM-Pluto (PlutoSDR).
+The system has moved beyond first hardware smoke tests: live RDS now decodes on PlutoSDR, with stabilized sample-rate handling, persistent DSP state across TX frames, and coherent pilot/stereo/RDS phase behaviour.
+
+### What changed since v0.6.0-pre
+- live RDS path stabilized enough to decode on hardware
+- generator now keeps DSP state persistent across frame boundaries
+- RDS carrier alignment tightened against the stereo/pilot phase model
+- Pluto profile tuned to the working sample-rate and level combination
+- multiple DSP/control fixes landed during real hardware bring-up
 
 ### Build for PlutoSDR
 ```powershell
@@ -11,25 +18,13 @@ go build -tags soapy ./cmd/fmrtx
 .\fmrtx.exe --tx --config docs/config.plutosdr.json
 ```
 
-### What's proven
-- 82 tests pass (DSP, spectral, operator truth, engine)
-- FM IQ magnitude verified: all samples |I²+Q²| = 1.000000
-- Spectral verification: 19 kHz pilot, 38 kHz stereo, 57 kHz RDS confirmed
-- Continuous TX engine runs stable for >60s in tests
-- IQ resampling 228k→528k preserves signal magnitude
-
-### First smoke test procedure
-1. Connect PlutoSDR via USB
-2. `.\fmrtx.exe --list-devices` — verify device shows up
-3. `.\fmrtx.exe --tx --config docs/config.plutosdr.json` — start in idle mode
-4. `curl -X POST http://localhost:8088/tx/start` — begin transmitting
-5. Tune FM receiver to 100.0 MHz — should hear 1kHz/1.6kHz test tones
-6. `curl http://localhost:8088/runtime` — check telemetry
-7. `curl -X POST http://localhost:8088/tx/stop` — stop
-8. Ctrl+C to exit
+### What this release means
+- suitable for continued real hardware bring-up on PlutoSDR
+- not yet positioned as a final 1.0 release
+- recommended as the current pre-release baseline for further hardware validation
 
 ### Safety defaults
 - TX is OFF by default — requires explicit start
-- outputDrive 0.3 in PlutoSDR config (conservative)
-- Limiter enabled with ceiling 1.0
-- Pre-emphasis 50µs (European standard)
+- limiter remains enabled by default
+- pre-emphasis remains 50µs
+- hardware operation still requires proper RF measurement and lawful operation