Implementation plan for the LastPass importer (D10–D13 of the import/export spec). 17 tasks: 6 core (parser TDD), 3 CLI (clap + handler + integration tests), 1 WASM bridge, 4 SW (messages + handlers + tests + router), 2 vault tab (Import panel + vitest), 1 CHANGELOG. Sibling to Plan 3A; both must merge before v0.3.0 tagging. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>