Mindrealm v1 Unknown Duration Progress Staged checkpoint

Timestamp: 2026-1005-2136-0387 America/Phoenix

- Unknown-duration compiler progress is data-driven through Compiler-UI.json.
- Shared Compiler-UI.ps1 is byte-for-byte identical between PHLEGM v6 and Mindrealm v1.
- Stage 1 maps 0..97 to 0..30 and 97..100 to 30..100.
- Stage 2 maps the remaining 30..97 to 30..60 and 97..100 to 60..100.
- Stage 3 leaves the remaining 60..100 as-is.
- Stages are sequential: each stage receives the prior stage output.
- Shared UI SHA-256: 0a0dc53c4c2a6283f1fb0ca44389adb0d86915837a0e3a36817704be832b697e
- Shared progress-data SHA-256: 7dfeb4733b1454fb8e70d87dccbd7f73b034eab9275f4b36d5cd909ab566ff65
