Add jam strategies (direct/precision/flood), web UI modes and SmartRF register export/import

- JamMode: DIRECT, PRECISION, FLOOD with NVS persistence and flood tick path
- HTTP: POST /api/jam_mode, GET/POST /api/cc1101/registers
- Telemetry: jam_mode, jam_mode_str
- Web UI: mode buttons, toast on switch, CC1101 hex export/apply card
- config.h: precision/flood tuning, CC1101_CFG_REG_LAST
- platformio.ini: explicit USB serial upload port for macOS

Made-with: Cursor

include/config.h

@@ -25,7 +25,8 @@
 #define WEB_PORT 80
 
 // Jamming: max CC1101 TX (+10 dBm). External PA removed — radiated power is chip + antenna gain only.
-#define DEFAULT_AUTO_START_JAM false   // NVS key autoStartJam; do not jam until user enables or saves auto-start
+// Jam always starts after boot self-test; use web “Stop Jamming” (or capture REC) to pause for RX/capture.
+#define DEFAULT_AUTO_START_JAM true
 // CC1101 only accepts 8 discrete power levels (index 0-7); jam path always uses max (10 dBm).
 #define JAM_POWER_LEVELS      8
 #define DEFAULT_JAM_POWER_IDX 7        // 10 dBm — full device output (see TI SWRS061 PATABLE / output power)
@@ -34,12 +35,32 @@
 #define JAM_BITRATE_KBPS 250.0f        // baseband / channel filter context for RadioLib begin()
 #define JAM_FREQ_DEV_KHZ 380.0f        // default passed to begin(); per-radio deviation applied after init
 #define JAM_RX_BW_KHZ    812.0f        // wide RX BW for begin()
+// GDO0 toggle rate during jam (1 MHz timer tick). Higher → wider AM/FM splatter on both carriers; 100 kHz typical.
+#define JAM_LFSR_KEY_HZ    100000
 
 // Fixed dual-carrier jamming: each radio holds one frequency at full TX power (TI CC1101 freq + deviation).
+// Many NA ~315 MHz RKE remotes are ASK/OOK (see TI CC1101 datasheet MDMCFG2.MOD_FORMAT). Jam path uses OOK on
+// R1 so LFSR on GDO0 keys the PA (broad AM sidebands). Set JAM_R1_USE_OOK 0 for 2-FSK only at JAM_DEV_KHZ_R1_WIDE.
+// Fobs may sit on 314.8–315.2 MHz — measure with an SDR and retune JAM_LOCK_FREQ_1_MHZ if needed.
 #define JAM_LOCK_FREQ_1_MHZ    315.0f
 #define JAM_LOCK_FREQ_2_MHZ    433.92f
 #define JAM_DEV_KHZ_R2_WIDE    380.0f
-#define JAM_DEV_KHZ_R1_NARROW  25.0f
+#define JAM_DEV_KHZ_R1_NARROW  25.0f   // probe / RadioLib begin() only
+#define JAM_DEV_KHZ_R1_WIDE    200.0f  // FSK jam spread when JAM_R1_USE_OOK is 0 (or OOK setup fails)
+#define JAM_R1_USE_OOK         1       // 1 = R1 jam ASK/OOK (typical NA); 0 = wide 2-FSK on R1
+
+// Precision jam: narrow 2-FSK on both + slower LFSR (energy in a smaller RF slice).
+#define JAM_PRECISION_DEV_R1_KHZ  28.0f
+#define JAM_PRECISION_DEV_R2_KHZ  55.0f
+#define JAM_PRECISION_LFSR_HZ       40000
+
+// Flood jam: packet-mode random payloads (mcore1976-style bursty TX); deviation for symbol spread.
+#define JAM_FLOOD_PKT_BYTES    64
+#define JAM_FLOOD_DEV_R1_KHZ   140.0f
+#define JAM_FLOOD_DEV_R2_KHZ   200.0f
+
+// SmartRF-style dump: config space only (TI SWRS061); PATABLE/ strobes not included.
+#define CC1101_CFG_REG_LAST    0x2E
 
 // 0.96" SSD1306 OLED display — I2C via SW_I2C (any free GPIO)
 #define OLED_SDA_PIN  17