M0: compilable skeleton — Kigi 0.1.0 fork surgery

Hard fork of xai-org/grok-build (Apache-2.0) re-targeted as Kigi, an
unofficial Kimi Code CLI community build.

Rename & identity
- 72 xai-*/xai-grok-* crates -> kigi-* (explicit: xai-grok-pager-bin ->
  kigi-bin [binary `kigi`], xai-grok-pager -> kigi-tui; rest mechanical);
  ptyctl, ptyctl-cli, third_party/ unchanged; proto package
  xai.grok.tools.v1 -> kigi.tools.v1
- Config home ~/.kigi (KIGI_SHARE_DIR override), env prefix GROK_* ->
  KIGI_*, `kigi --version` carries the unofficial-community-build notice
- clap identity, help text, startup banner, prompt templates rebranded
  (templates re-encrypted)

Deletions (PRD removal list #5/#6/#7/#9/#10)
- voice input (xai-grok-voice) and all TUI wiring
- telemetry: Mixpanel client, external OTel stream, Sentry, OTLP layers,
  trace/GCS/S3 upload queues (kigi-file-utils halved), workspace upload
  module & dc_log, heap-profile uploader, auth-diagnostics uploader,
  session-analytics halves of feedback; local zero-egress observability
  preserved in new kigi-log crate (unified log, --debug firehose,
  subsystem file logs, opt-in instrumentation)
- announcements (crate, remote-settings fields, TUI surfaces)
- plugin marketplace (crate, sources/browse/CTA/extensions-modal tab);
  direct plugin install/uninstall/update via kigi-agent git_install kept
- relay/gateway/assets endpoints and features (agent relay, headless
  relay transport, gateway bridge, LeaderEnvUrls); leader IPC socket now
  ~/.kigi/leader.sock + KIGI_LEADER_SOCKET, no ws-url derivation
- functional types rehomed instead of deleted: PermissionMode ->
  kigi-config-types, McpInitStrategy -> kigi-mcp, PrCreationSource ->
  session signals, TerminalDiagnostics -> kigi-pager-render, agent_id ->
  shell util

Endpoints
- kigi-env rewritten: single production KigiEndpoints {coding_api_base_url
  https://api.kimi.com/coding/v1 (KIGI_CODE_BASE_URL), oauth_host
  https://auth.kimi.com (KIGI_OAUTH_HOST), update_base_url (GitHub
  Releases API), upgrade_page_url}; GrokBuildEnvironment enum deleted

Toolchain & workspace hygiene
- Rust 1.97.0 pinned; edition 2024; full cargo update; git2 hoisted to
  workspace at 0.21 (Option->Result API migration), quick-xml 0.41
- Root Cargo.toml hand-maintained (PRD §8.1): version 0.1.0 inherited by
  all members, members sorted, unused deps pruned
- cargo-deny advisories gate (deny.toml with documented transitive
  exceptions); CI workflow (check/clippy/fmt/deny/test, macOS+Linux)
- cross-crate test seams re-gated behind `test-support` cargo feature;
  insta snapshot baselines renamed to the kigi_tui prefix
- clippy --workspace --all-targets: zero warnings; fmt clean

Fixes surfaced by the port
- updater probe/installer divergence (bin/kigi vs bin/grok symlink set)
- idle model-metadata refresh dead under KIGI_CODE_BASE_URL override
  (new is_effective_coding_endpoint_url, loopback+override aware)
- macOS symlinked-TMPDIR fixture canonicalization (foreign_sessions,
  fast-worktree); RSS measurement tests serialized via serial_test

Docs & legal (Apache §4)
- NOTICE added (upstream attribution + change statement); THIRD-PARTY
  notices sustained; kigi-tools ported-code notices extended; README,
  CONTRIBUTING, SECURITY, AGENTS.md rewritten

Out of scope for M0 (tracked): Kimi auth/inference (M1), search/fetch,
command parity, config import (M2), Computer Hub excision & final
brand-token sweep (M2), distribution & self-update rewrite (M3).

crates/codegen/kigi-shell/tests/test_subagent_orphan_reconcile.rs

@@ -0,0 +1,110 @@
+//! End-to-end test for subagent orphan reconciliation on session resume.
+//!
+//! When a process dies mid-subagent, the subagent's `meta.json` is left
+//! `status: "running"` with no `SubagentFinished` — so on resume the client
+//! shows it Running forever. `MvpAgent::load_session` heals this: it scans the
+//! session's `subagents/` dir and flips any stale `running` meta (not tracked by
+//! the live coordinator) to `cancelled` (mechanism A, the meta pass).
+//!
+//! This test spawns a real `grok agent stdio` process, seeds an orphaned
+//! `running` meta on disk, resumes the session, and asserts the meta was
+//! reconciled to `cancelled`.
+//!
+//! Run locally (needs a pre-built binary):
+//! ```bash
+//! cargo test -p kigi-shell --test test_subagent_orphan_reconcile -- --ignored
+//! ```
+
+use std::future::Future;
+use std::path::{Path, PathBuf};
+
+use kigi_test_support::*;
+
+async fn with_local_set<F, Fut>(f: F)
+where
+    F: FnOnce() -> Fut,
+    Fut: Future<Output = ()>,
+{
+    tokio::task::LocalSet::new().run_until(f()).await;
+}
+
+/// Find `<home>/sessions/<enc-cwd>/<id>` without depending on the internal cwd
+/// encoder: scan the one level of cwd dirs for a child named `<id>`.
+fn locate_session_dir(home: &Path, id: &str) -> PathBuf {
+    let sessions = home.join("sessions");
+    for entry in std::fs::read_dir(&sessions)
+        .expect("read sessions dir")
+        .flatten()
+    {
+        let candidate = entry.path().join(id);
+        if candidate.is_dir() {
+            return candidate;
+        }
+    }
+    panic!(
+        "session dir for {id} not found under {}",
+        sessions.display()
+    );
+}
+
+#[tokio::test]
+#[ignore] // requires pre-built binary
+async fn resume_reconciles_orphaned_running_subagent() {
+    with_local_set(|| async {
+        let server = MockInferenceServer::start()
+            .await
+            .expect("start mock server");
+        let workdir = git_workdir();
+
+        // Phase 1: create a real session, then take its home so we can seed it.
+        let mut writer = GrokStdioClient::spawn(&server, workdir.path()).await;
+        writer.initialize_with_timeout().await;
+        let session_id = writer.create_session_with_timeout(workdir.path()).await;
+        let shared_home = writer.take_home();
+        drop(writer);
+
+        // Simulate a crash: inject a subagent meta left `running` on disk (no
+        // terminal write, no SubagentFinished) — exactly what a dead process
+        // leaves behind.
+        // GrokStdioClient sets HOME=<temp>; the binary uses <HOME>/.kigi as KIGI_SHARE_DIR.
+        let kigi_home = shared_home.path().join(".kigi");
+        let session_dir = locate_session_dir(&kigi_home, session_id.0.as_ref());
+        let sub_id = "sa-orphan";
+        let meta_path = session_dir.join("subagents").join(sub_id).join("meta.json");
+        std::fs::create_dir_all(meta_path.parent().unwrap()).unwrap();
+        std::fs::write(
+            &meta_path,
+            serde_json::json!({
+                "subagent_id": sub_id,
+                "parent_session_id": session_id.0.as_ref(),
+                "child_session_id": "child-orphan",
+                "subagent_type": "general-purpose",
+                "description": "stuck task",
+                "prompt": "do work",
+                "status": "running",
+                "started_at": chrono::Utc::now().to_rfc3339(),
+            })
+            .to_string(),
+        )
+        .unwrap();
+
+        // Phase 2: resume in a fresh process. `load_session` runs the reconcile.
+        let reader = GrokStdioClient::spawn_with_home(&server, workdir.path(), shared_home).await;
+        reader.initialize_with_timeout().await;
+        let _ = reader
+            .load_session_with_timeout(&session_id, workdir.path())
+            .await;
+
+        // The orphan's on-disk meta must now be terminal (cancelled), not running.
+        let reread: serde_json::Value =
+            serde_json::from_str(&std::fs::read_to_string(&meta_path).expect("read orphan meta"))
+                .expect("parse orphan meta");
+        assert_eq!(
+            reread.get("status").and_then(|s| s.as_str()),
+            Some("cancelled"),
+            "resume must reconcile the orphaned running subagent to cancelled\nstderr:\n{}",
+            stderr_tail(&reader.stderr(), 2000)
+        );
+    })
+    .await;
+}