Classes now build one table per implemented interface, in implements order with
one two-byte entry per interface slot, and a failed class rolls back so a
missing method address is refused instead of dispatching to zero. The MAP gains
one TABLE record per table, and the x128 fixture checks table contents, distinct
per-class tables, both rollback paths, and the exact MAP text.

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

Adds control flow, field access, forward self calls, method/program entry tracking, and E227 emission-failure reporting. Print vectors now live in safe zero-page cells to avoid the 6502 indirect-JMP page bug.

Statement emission now runs from parser pass 2: assignment, byte + and -, and
print reach codegen.s through emit.s, and the statements fixture executes the
emitted bytes in x128. Restoring the parser trace fixture's length arithmetic
(it emitted between the two halves of the subtraction, which clears carry)
brings the 41-fixture parser verification back to green after emit.s joined
the link.

Also check in the vim clone's improved C128 build and the Power C
reverse-engineering notes and tools.

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

Generated programs now have control-flow emission, text and fault output, a
free-list heap, class descriptors, and object construction/deletion. Each
story lands with an x128 fixture and verifier so the runtime stays proven
before the parser drives code generation.

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