v0.8.1

Added

• (navigation) add source file filtering and workspace detection for LSP fallback
• (server) add structured DegradedToolInfo for degraded tool reporting

Fixed

• (lint) resolve clippy warnings in error.rs and helpers.rs
• (common) improve symbol not found hint to suggest search_codebase
• (search) exclude .git/, node_modules/, vendor/ from search results

Other

• (helpers) apply rustfmt formatting to assert_eq! statements
• (server) update tool descriptions with missing guidance
• (readme) fix inaccuracies in tool count, agent directives, and development commands
• (server) add comprehensive helpers module tests achieving 95% coverage
• (lsp) add transport edge case tests improving coverage to 89%
• (lsp) add client module tests for validation status and in-flight guard
• (lsp) add comprehensive error.rs tests achieving 100% coverage
• (treesitter) add parser tests for all supported languages achieving 95% coverage