Fix invalid UTF-8 line/character mapping (2de4a3f)
LineAndCharacterToPosition now scans with utf8.DecodeRuneInString, so malformed UTF-8 advances by its real byte size instead of utf8.RuneLen(RuneError)'s 3-byte assumption. This fixes incorrect offsets for invalid sequences and tightens the LSP position conversion path.
Fix declaration-space crash for merged export assignments (
39c4ad2)
The checker now only treats export-assigned entity-name expressions as aliases when the symbol is actually marked alias. That avoids a crash while resolving declaration spaces for merged symbols that resolve to an export assignment.
Mark opened files changed when didOpen text differs from disk (
21b262e)
The project/session logic now detects when a didOpen payload doesn't match the on-disk contents and marks the file as changed. This prevents stale program state and fixes a crash path in semantic tokens when CRLF editor text diverges from LF-loaded source.
Fix hover type-argument preservation and related crashes (
6b8645e, ef89a24, 
60169b3)
Hover/quickinfo generation was refactored to preserve type arguments for qualified names and instantiation-like expressions instead of silently dropping them. The day also includes crash fixes for hovering namespace/interface heritage cases and for empty-enum verbosity handling.
Fix token lookup on reparsed subtrees (6b79498)
getTokenAtPosition now avoids using reparsed nodes as the previous subtree and skips reparsed list members when choosing a preceding token. That closes a crash when token navigation walks updated syntax trees.
Fix paths resolution for .d.ts via .ts extension (9d97c2f)
Module resolution now tracks when an extension comes from config-driven paths/package resolution rather than the source specifier, preventing the checker from misclassifying it as a TS extension from the import text. This fixes a crash in paths mappings that point at declaration files through .ts-style substitutions.
Other misc changes
- Baseline triage and accepted baseline moves.
- Semantic tokens temporarily disabled in the server.
- Added regression tests and baseline updates for hover/completion/resolution edge cases.