fix: scope inline chat accept/reject lenses to the task document

[laileni-aws]

Problem

When using inline chat, if the user triggers a suggestion and then switches to another file without accepting or rejecting it, the Accept / Reject code lenses (and the "Amazon Q is generating..." lens) appear in that unrelated file.

Root cause

CodelensProvider (in packages/amazonq/src/inlineChat/codeLenses/codeLenseProvider.ts) is registered for all documents:

vscode.languages.registerCodeLensProvider('*', this)

and provideCodeLenses(_document, _token) returned this.codeLenses while ignoring the _document argument. So the lenses built for the active inline task were returned for every document VS Code queried — including whatever file the user switched to.

Fix

Track the document that owns the active inline task (task.document.uri) and only return the lenses when the queried document matches:

public provideCodeLenses(document, _token) {
    if (this.taskDocumentUri === undefined || document.uri.toString() !== this.taskDocumentUri.toString()) {
        return []
    }
    return this.codeLenses
}

The owning document URI is set in updateLenses and cleared when the task completes.

Testing

• Added packages/amazonq/test/unit/inlineChat/codeLenseProvider.test.ts:
  • decision lenses appear only in the task's document, not other files (regression guard);
  • the in-progress lens is likewise scoped to the task's document;
  • lenses are cleared when the task completes.
• Added a changelog entry.

Notes

• No change to when lenses are created — only to which document they are shown in.