PHLEGM v7 validation fix 2026-1006-1619-3902

- Keeps the last-good v6 emulator/runtime baseline used for v7 recovery.
- Keeps canonical inline src/lib/microcode.lib and fixes the validator so it no longer rejects that same required file.
- Validates the active compiled-image clear used by the known-good runtime instead of requiring the later dual-CPU cache rewrite.
- Accepts the known-good static Machine I/O GUI path; external PHLEGM.gui.phlegm is validated when present.
- Startup OPT-IN hint now lists only components whose compile state is exactly OPT-IN.
- Unknown-duration compiler progress remains the known-good two-stage 97% -> 30% mapping.
- Current authoritative three-script bootstrap remains unchanged.
