libxce-failover, raft-sim-conformance, ha-commit-durability,
ha-wal-replication, ha-heartbeat-committed-propagation, ha-prevote,
ha-elect-ctx-lifecycle, and ha-entity-snapshots all had 100% of tasks
checked but had never run a formal /kiro-validate-impl closure pass
(spec.json stuck at phase "tasks-generated", some with stale
ready_for_implementation flags). Each now has a fresh validate_impl
GO decision backed by an ASAN build, full standalone test-suite run,
and a live 10-round sequential HA soak with zero committed-job loss.
Adds raft_sim_scenario_figure8: a previous-term entry on a quorum under a
new-term leader is NOT committed until a current-term entry commits (library-
gated by raft_advance_commit; verified by a mutation test). Also restores the
raft_sim_scenario_drop_dup_reorder implementation that commit e445404 (task 5.3)
silently dropped from raft_sim.c (a stray git checkout reverted the uncommitted
impl), which had left the lib build broken with an undefined reference.
Build green: test_sim_5_3_drop_dup_reorder + test_sim_5_4_figure8 both PASS.
Harness surfaced a real upstream raft.c split-brain bug (bug-1095/1096,
bug-851 family) in raft_on_vote_reply: counter-based vote tally double-counts
a duplicated vote-response and no stale-term drop -> two leaders same term.
Out of this spec's boundary (raft.c protocol); recorded as Implementation Note.
Mermaid parse errors in design.md's diagrams:
- Literal `|` in flowchart node labels is read as an edge-label delimiter:
system-flow `term | 0` -> `term | 0`; checker `|{i:...}|` ->
`|{i:...}|` (entity renders as a literal `|`, meaning preserved).
- `;` is a mermaid statement separator and truncated the text it appeared in:
sequence msgs `commit_index += ; apply()` -> `commit_index advanced, apply()`
and `(R5); halt` -> `(R5), then halt`; flowchart label `responses;<br/>` ->
`responses,<br/>`.
Valid edge-label pipes (-->|violation|) and all `;` in prose/tables outside the
mermaid fences are unchanged. All three diagrams now render.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01MSxwb2Xt5F84ATgiAZnH8V
