Emitted print calls pointed at a compiler trampoline and the literal at a
compiler buffer, so a built PRG could compile a print source but never show
it. Calls now use the em_pr_* cell values, a position-independent runtime is
copied into a PRINT section, an ENTRY stub runs the body, and the literal is
relocated into DATA.

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Co-Authored-By: Codebuff <noreply@codebuff.com>

The verifier proved the launcher path but never ran prepare-disk.ps1 itself,
so it now compares the injected n128c byte-for-byte with build/n128c.prg, and
the driver suite is part of the regression manifest.

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Co-Authored-By: Codebuff <noreply@codebuff.com>

The compiler had every phase and the PRG/MAP writer but no program on the
C128 that used them, so this adds the prompt, the planned code base, the
three container sections and the one-screen summary, plus a verifier that
drives the launcher through success, syntax failure and output collision
and runs the generated PRG.

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Co-Authored-By: Codebuff <noreply@codebuff.com>