Large refactor, converting normalizedPath into vscode.uri where possible and StringURI where not.

[Rider-Linden]

Removes the normalized path concept and replaces it with StringURI/vscode.uri for file tracking.

[Copilot]

Pull request overview

This PR refactors the extension’s core path/file identity model by removing NormalizedPath and migrating preprocessing, include resolution, diagnostics, and tests to a URI-first approach using branded StringUri plus vscode.Uri at VS Code boundaries.

Changes:

• Replaces NormalizedPath/normalizePath with StringUri plus helpers (filePathToStringUri, stringUriToFilePath, etc.) across hosts and preprocessor pipeline.
• Updates parser/linemapper/diagnostics to embed URI strings directly in @line directives and diagnostic source tracking.
• Refactors and de-duplicates test host/config scaffolding via shared helpers (mockHost.ts) and updates many suites accordingly.

Reviewed changes

Copilot reviewed 36 out of 36 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
src/utils.ts	Adds StringUri↔vscode.Uri conversions and updates VS Code host I/O to accept StringUri.
src/interfaces/hostinterface.ts	Replaces NormalizedPath with StringUri, adds URI helpers and UriSet.
src/interfaces/configinterface.ts	Updates config path APIs to return StringUri.
src/configservice.ts	Returns config/extension paths as StringUri.
src/shared/lexer.ts	Switches lexer source-file tracking to StringUri.
src/shared/parser.ts	Switches parser state/mappings/module tracking to StringUri; stores URIs directly in @line.
src/shared/linemapper.ts	Tracks mappings by StringUri rather than filesystem paths.
src/shared/lexingpreprocessor.ts	Updates preprocessor API to accept StringUri source file and workspace roots.
src/shared/includeprocessor.ts	Migrates include/require state and .luaurc alias handling to StringUri + UriSet.
src/shared/macroprocessor.ts	Updates diagnostic source-file plumbing to StringUri.
src/shared/conditionalprocessor.ts	Updates diagnostic source-file plumbing to StringUri.
src/shared/diagnostics.ts	Migrates diagnostic location/source types to StringUri.
src/shared/languageservice.ts	Migrates cached-syntax file path construction to URI joining.
src/shared/languagerepository.ts	Migrates cached-syntax file path construction to URI joining.
src/shared/sharedutils.ts	Drops NormalizedPath dependency; file helpers now accept plain filesystem path strings.
src/server/nodehost.ts	Migrates NodeHost I/O and resolution to StringUri and file path conversion.
src/synchservice.ts	Keys sync tracking by masterUri.toString() instead of normalized filesystem path.
src/scriptsync.ts	Uses StringUri for mapping/diagnostic source targeting and URI comparisons.
src/pluginsupport.ts	Migrates plugin-generated file paths to StringUri and URI joining.
src/test/suite/helpers/mockHost.ts	Adds shared mock HostInterface + MockConfig utilities for tests.
src/test/suite/helpers/expectMapping.ts	Updates mapping assertions to compare StringUri.
src/test/suite/parser.test.ts	Updates parser tests to use StringUri and shared mock host helper.
src/test/suite/require-table.test.ts	Updates require table tests to use StringUri and shared mock host helper.
src/test/suite/parse-line-mappings.test.ts	Updates expected @line URIs and test setup to StringUri.
src/test/suite/line-mapping.test.ts	Migrates line mapping tests to StringUri.
src/test/suite/lexer-diagnostics.test.ts	Migrates lexer diagnostics tests to StringUri.
src/test/suite/macro-diagnostics.test.ts	Migrates macro diagnostics tests to StringUri.
src/test/suite/conditional-diagnostics.test.ts	Migrates conditional diagnostics tests to StringUri.
src/test/suite/include-diagnostics.test.ts	Migrates include diagnostics tests to StringUri.
src/test/suite/diagnostic-integration.test.ts	Migrates diagnostic integration tests to StringUri and shared MockConfig.
src/test/suite/lexingpreprocessor.test.ts	Migrates lexing preprocessor tests to StringUri and shared MockConfig.
src/test/suite/include-disk-integration.test.ts	Updates disk integration tests to compare outputs after normalizing absolute file URIs.
src/test/suite/nodehost.test.ts	Migrates NodeHost tests to StringUri.
src/test/suite/parser-directive-diagnostics.test.ts	Migrates directive diagnostics tests to StringUri.
src/test/suite/parser-diagnostics.test.ts	Migrates parser diagnostics integration tests to StringUri.
.github/copilot-instructions.md	Updates repository guidance from NormalizedPath to StringUri.