v1.2.6

What's Changed

• build(deps): bump @vitest/mocker from 4.1.10 to 4.1.11 in the npm_and_yarn group across 1 directory by @dependabot[bot] in #10

Added permanent instrument deletion from the Instruments page.
Unused active or archived instruments can be deleted after confirmation, along with their saved price history.
Instruments referenced by account history remain protected, including closed holdings, archived accounts, and corporate-action references.
Deletion is atomic and restricted to the signed-in user’s instruments.
Added regression coverage for confirmation, cancellation, price cleanup, historical-reference protection, and cross-user isolation.