feat: forward named arguments in do iifes

[tiye]

Summary

• add RFC 0097 for CoffeeScript-style do argument forwarding
• forward same-named outer values for plain required name parameters
• reject defaults, rest, and destructuring in forwarded do IIFEs
• document and test zero-argument compatibility plus loop closure usage

Validation

• make check
• targeted do_iifes_forward_same_named_outer_arguments test
• make docs and generated manual checks
• manual CLI smoke test for stepped loop closures

[Copilot]

Pull request overview

This PR implements RFC 0097 by extending QuickCoffee’s do IIFE semantics to forward same-named outer values into immediately-invoked function literals that have only plain required name parameters, while rejecting defaults/rest/destructuring in that forwarding form. It updates compiler/parser enforcement, adds coverage for the new behavior, and refreshes RFC + manual/docs references accordingly.

Changes:

• Add do argument forwarding for function literals with plain required name parameters (compiler emits Load + Call(n) instead of always Call(0)).
• Reject default/rest/destructuring parameters for forwarded do IIFEs at parse time (and verify time as a backstop).
• Add RFC/documentation updates and initial tests for forwarding + zero-arg compatibility.

Reviewed changes

Copilot reviewed 18 out of 18 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
tests/rfc_core.rs	Adds a new RFC-core test for do forwarding + compatibility cases.
src/parser.rs	Validates do + function-literal parameter shapes (rejects defaults/rest/destructuring for forwarding form).
src/bytecode.rs	Emits forwarded-argument loads and calls with correct arity for do + eligible function literals.
RFCs/0097-do-forwarded-arguments.md	New RFC describing the forwarding contract and constraints.
RFCs/0001-language-core.md	Updates core RFC index to reference RFC 0097.
README.md	Updates supported RFC range to include RFC 0097.
manuals/manual.zh-CN.qc	Adds do forwarding synopsis to the executable manual source (zh-CN).
manuals/manual.latin.qc	Adds do forwarding synopsis to the executable manual source (Latin).
manuals/manual.en.qc	Adds do forwarding synopsis to the executable manual source (English).
manuals/manual.devanagari-sa.qc	Adds do forwarding synopsis to the executable manual source (Devanagari Sanskrit).
manuals/manual.classical-zh.qc	Adds do forwarding synopsis to the executable manual source (Classical Chinese).
docs/syntax.zh-CN.md	Documents do forwarding and parameter restrictions (zh-CN).
docs/syntax.en.md	Documents do forwarding and parameter restrictions (en).
docs/manual.zh-CN.html	Regenerated manual HTML reflecting the new do synopsis (zh-CN).
docs/manual.latin.html	Regenerated manual HTML reflecting the new do synopsis (Latin).
docs/manual.en.html	Regenerated manual HTML reflecting the new do synopsis (English).
docs/manual.devanagari-sa.html	Regenerated manual HTML reflecting the new do synopsis (Devanagari Sanskrit).
docs/manual.classical-zh.html	Regenerated manual HTML reflecting the new do synopsis (Classical Chinese).

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