Add theme engine, animated UI, and Bus Dump / Crypto / Exfil modules

UI:
- Theme engine (5 palettes) persisted to NVS; live Theme switcher module
- Animated shell: boot splash, CRT scanlines, breathing menu cursor,
  wipe-in transitions, spinners, progress bars

New recon modules:
- Bus Dump: SPI-NOR + I2C EEPROM readout to microSD (read-only)
- Crypto Lab: entropy, magic-byte file-ID, XOR brute, AES-128 known-key
- Exfil: SD browser + base64 dump export over USB serial, manifest writer

README updated with the new module table and look-and-feel notes.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01AAhMHMRAQLQ9hSbBECKNfn

README.md

@@ -20,6 +20,16 @@ OBD/USB port, a PC, smart appliances.
 | **UART Sniff** | Passive UART capture (hex+ascii, selectable baud); freeze a frame and **replay it on a keypress** (manual TX only). |
 | **USB Enum**| ESP32-S3 as USB host — reads **descriptors** (VID/PID, class, strings, config) to fingerprint an unknown device. Read-only. |
 | **DefCred** | Checks a single host (default: gateway) against a short list of **factory-default logins** over HTTP Basic Auth. Stops on first hit. |
+| **Bus Dump**| Reads **SPI-NOR (25-series)** and **I2C EEPROM (24-series)** chips on your own boards to `/dump/*.bin` on microSD. Read-only. |
+| **Crypto Lab** | Offline analysis of a dumped blob: **Shannon entropy**, magic-byte **file-ID**, single-byte **XOR** brute, **AES-128-ECB** known-key decrypt. |
+| **Exfil**   | Browse the SD card and **stream a dump to the host** over USB serial as base64 (`base64 -d`); writes a manifest of what you pulled. |
+| **Theme**   | Live **UI theme switcher** — 5 palettes, saved to NVS, restyles everything instantly. |
+
+## Look & feel
+
+Boot splash with a sweeping-glow logo, CRT scanlines, a breathing menu
+cursor, wipe-in transitions, spinners and progress bars. Switch palettes any
+time in the **Theme** module.
 
 ## Build & flash