§9 acceptance: grep-zero sweep — every internal x.ai/grok identifier renamed

The PRD's first acceptance gate now holds: grep -RinE '\bx\.ai\b|grok'
crates/ --include='*.rs' → 0 matches (exempt: NOTICE and third-party
license archives, README provenance, and the required 'Based on Grok
Build Open Source' attribution, now sourced from version_attribution.txt).

Wire-visible renames (both sides in this repo, changed in lockstep):
- Auth method id 'grok.com' → 'kimi-code' (AuthMethodKind::KimiCode).
- Every x.ai/* and _x.ai/* ACP ext method and meta key → kigi/* /
  _kigi/* (~200 names; grokShell → kigiShell). Session-file replay keeps
  a read-side alias for the legacy '_x.ai/session/update' method so
  existing updates.jsonl histories load; writes emit only the new name
  (both directions test-pinned).
- Agent types grok-build* → kigi* with a documented legacy-prefix alias
  at resolution time so persisted sessions keep resolving.
- ToolNamespace/BuiltinAgentName GrokBuild* → Kigi* (wire snake_case
  kigi/kigi_concise/kigi_hashline; schema regenerated); grok_build
  implementation dirs renamed to kigi*.
- x-grok-* headers → x-kigi-*, __GROK_* sentinels → __KIGI_*, themes
  grokday/groknight → kigiday/kiginight (old persisted values fall back
  to the default theme), web_fetch allowlist xAI hosts → kimi.com +
  moonshot platforms, changelog CDN → this repo, grok-build changelog
  archives deleted.
- BYOK default endpoint removed: [endpoints] api_base_url is now truly
  optional with NO default — consumers fail fast with the flag name when
  unset (no silent x.ai egress). Mock harnesses inject it explicitly.
- System-prompt identity fixed: 'released by xAI' → 'an unofficial
  community CLI for Kimi' (template + regenerated encrypted form).

Also repaired pre-existing grok-era test debt found by the sweep: the
stale trace_classify default-model pin, the grok-pager UA label test,
pty-harness stale-binary reuse and non-hermetic moonshot routing (a PTY
test could previously reach the real api.moonshot.cn), and the outdated
oauth fixture scope key.

Gates: §9 grep 0; fmt clean; workspace check/clippy 0/0 (-D warnings);
FULL cargo test --workspace: 234 suites, 21,961 passed, 0 failed;
deny advisories ok.

crates/codegen/kigi-tui/examples/memory_benchmark.rs

@@ -49,7 +49,7 @@ fn create_string_info(id: usize) -> SubagentInfoString {
         subagent_type: "general-purpose".to_string(),
         persona: Some("researcher".to_string()),
         role: Some("analyst".to_string()),
-        model: Some("grok-3".to_string()),
+        model: Some("kigi-3".to_string()),
         status: Some("completed".to_string()),
         tools_used: vec!["read".to_string(), "search".to_string(), "edit".to_string()],
     }
@@ -63,7 +63,7 @@ fn create_arc_info(id: usize) -> SubagentInfoArc {
         subagent_type: Arc::from("general-purpose"),
         persona: Some(Arc::from("researcher")),
         role: Some(Arc::from("analyst")),
-        model: Some(Arc::from("grok-3")),
+        model: Some(Arc::from("kigi-3")),
         status: Some(Arc::from("completed")),
         tools_used: vec![Arc::from("read"), Arc::from("search"), Arc::from("edit")],
     }
@@ -173,7 +173,7 @@ fn main() {
     println!("--- Realistic Scenario (100 subagents with varied data) ---");
     let subagent_types = ["general-purpose", "explore", "plan", "implementer"];
     let personas = ["researcher", "analyst", "reviewer", "implementer"];
-    let models = ["grok-3", "grok-3-mini", "grok-4"];
+    let models = ["kigi-3", "kigi-3-mini", "kigi-4"];
     let statuses = ["completed", "failed", "running", "cancelled"];
     let tools = ["read", "edit", "search", "execute", "list_dir"];
 

crates/codegen/kigi-tui/examples/memory_benchmark_accurate.rs

@@ -87,8 +87,8 @@ fn main() {
     println!("--- Clone Performance (1,000,000 clones) ---");
     let iterations = 1_000_000;
 
-    let string_info = create_string_info(1, "general-purpose", "grok-3", "researcher");
-    let arc_info = create_arc_info(1, "general-purpose", "grok-3", "researcher");
+    let string_info = create_string_info(1, "general-purpose", "kigi-3", "researcher");
+    let arc_info = create_arc_info(1, "general-purpose", "kigi-3", "researcher");
 
     let start = Instant::now();
     for _ in 0..iterations {
@@ -115,7 +115,7 @@ fn main() {
     println!("Scenario: 1000 subagents sharing subagent_type, model, persona, status");
 
     let shared_types = ["general-purpose", "explore", "plan"];
-    let shared_models = ["grok-3", "grok-3-mini"];
+    let shared_models = ["kigi-3", "kigi-3-mini"];
     let shared_personas = ["researcher", "analyst", "reviewer"];
 
     // Create string-based infos