fix(tests): stub listTasks in the PROJECT_DELETE handler test

[h4yfans]

Main's Unit & integration tests job has been red since #854 merged. One failure:

FAIL src/main/ipc/tasks-handlers.test.ts > tasks-handlers > Project operations
     > PROJECT_DELETE handler > should delete a project
AssertionError: expected false to be true

Cause

#854 (issue #837) made deleteProject enumerate the project's tasks so each cascaded task gets its own tombstone:

const cascadedTasks = repository.listTasks({ projectId: id, includeCompleted: true, includeArchived: true })
repository.deleteProject(id)
await publisher.projectDeleted({ id, snapshot })
for (const task of cascadedTasks) { ... }

tasks-handlers.test.ts declares listTasks: vi.fn() but the PROJECT_DELETE case never stubbed a return value, so the command iterated undefined, threw, and the handler returned { success: false }.

Confirmed by checking out f6a7b1234 (the #854 merge itself, before anything else landed) and running the file — it fails there. Not a flake: it failed twice on CI, including a clean re-run.

Fix

Stub listTasks in that test, plus a second case pinning the enumeration contract — completed and archived tasks cascade too, so they must be in the listing. The domain-level cascade behaviour itself stays covered by packages/domain-tasks/src/commands-delete-project.test.ts from #854.

Verification

• src/main/ipc project suite: 501 passed (was 500 passed / 1 failed)
• eslint, prettier, ipc:check (pre-commit): clean

🤖 Generated with Claude Code

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Project	Deployment	Actions	Updated (UTC)
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React Doctor found no new issues. 🎉

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