chore: checkpoint all prior work for clean state

Captures all uncommitted work from ha-config-bootstrap,
ha-heartbeat-liveness, and associated spec/tooling updates:

- src: ha.c, ha.h, cluster.c, config_repl.c, myapp.c, raft.c —
  heartbeat liveness, RDHUP integration, committing phase fixes
- tests: test_ha_role.c, test_config_repl.c, test_ha_rdhup_integration.c,
  test_p1_integration.c, test_p3_hardening.c, scheduler test
- specs: election-iomgr-refactor, ha-heartbeat-liveness,
  ha-peer-connection-reuse, raft-library (new); ha-config-bootstrap
  and election-iomgr-refactor task/research updates
- tooling: .wolf/ state, ha/data cluster fixtures, raft/raft.tla,
  src/build symlink, xce-build skill update

CLAUDE.md

@@ -27,17 +27,6 @@ XCE is an HPC cluster management system providing job scheduling, queue manageme
 /xce-build apiserver        # Build lib + apiserver + xcecli + run Go unit tests
 /xce-build xcecli           # Build xcecli only + run xcecli Go tests
 
-# From src/frontend/ (manual Go dev loop)
-make build-server       # Build apiserver binary → /tmp/apiserver
-make build-cli          # Build xcecli binary → /tmp/xce_static (CGO_ENABLED=0)
-make test               # Unit tests (no live server required)
-make test-integration   # Regression suite (requires XCE_BIN and SRV_URL env vars)
-make test-all           # Unit + integration tests
-
-# Nix package builds (from src/)
-nix build --option sandbox false .#xcecore       # C daemons + frontend/apiserver
-nix build --option sandbox false .#xcecore_debug # Same with debug/ASAN
-nix build --option sandbox false .#xcecli        # CLI tool only
 ```
 
 ## Test-Driven Development