Fix all stale test fixtures: cargo test --workspace fully green

[YASSERRMD]

Make the whole workspace test suite pass

Repairs the pre-existing stale #[cfg(test)] fixtures and example code that failed to compile under cargo test --workspace (libraries already built; only test/example targets were broken, and it predated the provider work).

Fixes

• clawforge-memory (store.rs tests): VectorEntry now needs created_at + session_id; MemoryQuery gained fields - test literals updated (..Default::default() where the type derives Default).
• clawforge-scheduler (scheduler.rs test fixture): added allowed_skills to the test AgentSpec.
• clawforge-cli examples (coding_agent, github_pr_reviewer, research_agent): added allowed_skills to AgentSpec, ..Default::default() to Capabilities literals, fixed get_recent_runs(n) -> get_recent_runs(n, offset), and moved VectorEntry/MemoryQuery imports to clawforge_memory::types.
• .gitignore: anchored the local tooling-dir rules (/memory/, /.claude/) to the repo root - the unanchored memory/ pattern was shadowing the tracked backend/memory crate.

Verification

cargo test --workspace  ->  185 passed; 0 failed

cargo build --workspace also succeeds.