STEP 9F CLEAN UPLOAD — NUMBER × COLOUR × SOUND
Methodology: book-v1, Part Six — Advanced Integration of Number, Sound and Colour

NEW:
- src/Numerology/FrequencyTriadCalculator.php
- api/controllers/FrequencyTriadController.php
- api/routes/frequency-triad.php
- tests/test-frequency-triad-calculator.php
- Dashboard Frequency Triad Activation panel
- API route: numerology/frequency-triad

BEHAVIOUR:
- Uses saved numerology profile values supplied by the dashboard.
- Life Path is the primary triad anchor.
- Maps Life Path to its book-v1 colour and corresponding tone/frequency.
- Shows Destiny colour as complementary context when available.
- Shows Personal Year as current-cycle context when available.
- No database schema changes.
- No SQL import required.
- database.php is not included or changed.
- Existing Step 9A–9E functionality is retained.