Kaia Counter v0.5.1 — in-house correction

Same WordPress plugin identity/path as the existing plugin.

Critical fix:
- The initial display is now per visitor fingerprint.
- A visitor with no issued number sees KaiaSpec.
- A visitor with an issued number sees only that visitor's own 8-digit number.
- The global current counter value is never used as the initial display.
- Existing issue history is preserved; no counter reset is required.
- If a re-issue is blocked, the already displayed personal number is restored rather than being replaced by KaiaSpec.

Display:
- 8 cells
- Before issue: KaiaSpec
- After issue: ordinary sequential number, zero-padded to 8 digits
- No rolling animation / no artificial wait
- GET NUMBER -> immediate issue -> GOT IT!
