Add v3.05.0 safety review documentation and Hamilton test suite docs
- firmware/custom-v305.mdx: watchdog, timeout protection, error codes,
I2C return checks, do_tune() safety, DiSEqC fixes, hardware validation
- tools/safety-testing.mdx: 55-test adversarial suite covering DiSEqC
abuse, tune parameter abuse, I2C address abuse, state machine violations,
boundary conditions, rapid-fire stress, and invalid vendor commands
- Updated version comparison with v3.05 tab and architectural table
- Sidebar entries for both new pages
Ryan Malloy
8b4aacab81