Release 0.5.0

Release 0.5.0

Added

• Add a versioned roadmap and public delivery criteria in docs/ROADMAP.md.
• Add bounded shell-free execution via a shared process runner for avr-gcc and PlatformIO.
• Add workspace-context extraction to an editor-neutral layer with deterministic caching.
• Add immutable, source-preserving parsing and local definition modeling for GNU AVR assembly:
  labels, GNU symbol directives, assignments, comments, and incomplete input.
• Add local symbol completion, document symbols, hover, and same-file go-to-definition.
• Add instruction/directive/macro statement modeling with continuations and same-line separators.
• Add structural, immutable GNU AVR expression trees with assembler semantics and bounded malformed-input recovery.
• Add deterministic large-file parser-latency fixture and parser-critical coverage gates.
• Add Extension Host coverage for activation, language features, static-only workspace modes, and packaged activation.
• Strengthen trust-bound behaviors for Restricted Mode and untrusted workspace execution paths.

Changed

• Standardize process and discovery behavior so cancellation and workspace shutdown propagate safely.
• Centralize compiler/platform metadata extraction and stale-result handling across discovery paths.
• Harden command/input handling in preparation for stricter release gates.

Security

• Ensure command execution never uses shell interpolation.
• Restrict executable command surfaces through validated process invocation.
• Keep static analysis functional when compiler/tooling is missing.