Allow percentages without percent signs

[ViTeXFTW]

What changed

• add the opt-in analysis.allowPercentagesWithoutSign analyzer/server setting
• accept bare numeric percentage values when enabled while still rejecting malformed values
• add a VS Code quick fix that enables the user setting from a bad-percent diagnostic
• document the setting and cover both validation modes

Why

The game parser accepts percentage values without a trailing %, while ZeroSyntax intentionally required the sign. This keeps the strict behavior by default but lets users opt into engine-compatible syntax.

Validation

• cargo test
• cargo test -p zerosyntax-analysis --test spec
• npm run compile
• npm run compile:test

The Electron smoke runner did not reach extension tests because VS Code 1.129 rejected the runner's launch flags.

[greptile-apps]

Greptile Summary

This PR adds an opt-in setting for accepting percentage values without %. The main changes are:

• Adds analyzer support for bare numeric percentages behind analysis.allowPercentagesWithoutSign.
• Wires the setting through language-server initialization and the VS Code extension.
• Adds a VS Code quick fix to enable the setting from bad-percent diagnostics.
• Documents the new setting and extends smoke coverage.

Confidence Score: 4/5

Safe to merge after addressing the non-blocking quick-fix targeting issue.

Core analyzer and server behavior are straightforward and covered by tests; the remaining issue is limited to quick-fix availability for malformed percentage values.

editors/vscode/src/extension.ts

T-Rex Logs

What T-Rex did

• Ran the Rust workspace tests for allow_percentages and confirmed all test suites passed with EXIT_CODE 0, including the diagnostics::tests::bare_percentages_are_opt_in.
• Validated the analyzer specification against the allow_percentages scenario and confirmed EXIT_CODE 0 with test specs_hold passing.
• Verified the VS Code proofs, including TypeScript compile and bundle success and the subsequent typecheck, for allow_percentages.

_{Ran code and verified through T-Rex}

Important Files Changed

Filename	Overview
crates/analysis/src/diagnostics.rs	Updates percent validation to accept bare numeric percentages only when enabled and adds tests for strict and opt-in modes.
crates/server/src/backend.rs	Reads the initialization option and applies it to the analyzer before serving diagnostics.
editors/vscode/src/extension.ts	Passes the setting to the server and adds a quick fix, but the action is also offered for malformed percentage values it cannot fix.
editors/vscode/src/test/suite/smoke.test.ts	Extends the smoke test to verify the bad-percent diagnostic and quick-fix availability.

_{Reviews (2): Last reviewed commit: "Merge dev into allow-bare-percentages" | Re-trigger Greptile}