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-pager-pty-harness/tests/scroll_matrix_curated.rs

@@ -0,0 +1,121 @@
+//! Curated scroll-matrix tier: one test per curated cell, exact-filterable
+//! by cell id (`cargo test --test scroll_matrix_curated c5_tmux_g9a -- --exact`).
+//!
+//! Each test drives `scroll_matrix::run_cell` against the real pager binary
+//! (PAGER_BINARY / local debug build — same contract as
+//! `scroll_correctness_ptyctl.rs`, and like it NOT `#[ignore]`d). Cells are
+//! host-paced PTY sessions, so a process-wide lock serializes them: the
+//! default in-process test parallelism would stretch gesture gaps and stack
+//! eight pagers onto one machine.
+//!
+//! Artifacts (recorder captures + per-cell report.json rows) land under
+//! `$TMPDIR/scroll-matrix-curated/` and are kept for post-mortems.
+
+use std::path::PathBuf;
+
+use kigi_pager_pty_harness::pager_binary;
+use kigi_pager_pty_harness::scroll_matrix::{
+    CellReport, CellStatus, curated, run_cell, summary_table,
+};
+
+/// Serializes cells across the in-process test threads (tokio mutex: held
+/// across awaits; no poisoning, so one failed cell doesn't cascade).
+static SERIAL: tokio::sync::Mutex<()> = tokio::sync::Mutex::const_new(());
+
+fn artifacts_dir() -> PathBuf {
+    std::env::temp_dir().join("scroll-matrix-curated")
+}
+
+/// Run one curated cell by id and return its report (panics on unknown ids
+/// so a renamed cell can't leave a vacuous test behind).
+async fn run_curated_cell(cell_id: &str) -> CellReport {
+    let cell = curated()
+        .find(|cell| cell.id == cell_id)
+        .unwrap_or_else(|| panic!("{cell_id} is not a curated cell — update this test file"));
+    let binary = pager_binary().expect("resolve pager binary");
+    let _serial = SERIAL.lock().await;
+    let report = run_cell(cell, &binary, &artifacts_dir()).await;
+    eprintln!(
+        "{}",
+        summary_table(std::slice::from_ref(&report)).trim_end()
+    );
+    report
+}
+
+/// Assert a normal (no-xfail) curated cell passes outright.
+async fn assert_cell_passes(cell_id: &str) {
+    let report = run_curated_cell(cell_id).await;
+    assert_eq!(
+        report.status,
+        CellStatus::Pass,
+        "{cell_id} did not pass — capture kept at {}\n{}",
+        report.log_path,
+        serde_json::to_string_pretty(&report).expect("report json"),
+    );
+}
+
+#[tokio::test(flavor = "multi_thread", worker_threads = 2)]
+async fn c1_auto_g3_flood_speed100() {
+    assert_cell_passes("c1_auto_g3_flood_speed100").await;
+}
+
+#[tokio::test(flavor = "multi_thread", worker_threads = 2)]
+async fn c2_auto_g3_flood_speed100() {
+    assert_cell_passes("c2_auto_g3_flood_speed100").await;
+}
+
+#[tokio::test(flavor = "multi_thread", worker_threads = 2)]
+async fn c3_wheel_lines1_g1() {
+    assert_cell_passes("c3_wheel_lines1_g1").await;
+}
+
+#[tokio::test(flavor = "multi_thread", worker_threads = 2)]
+async fn c4_auto_g10_ambiguous() {
+    assert_cell_passes("c4_auto_g10_ambiguous").await;
+}
+
+#[tokio::test(flavor = "multi_thread", worker_threads = 2)]
+async fn c5_tmux_g9a() {
+    assert_cell_passes("c5_tmux_g9a").await;
+}
+
+#[tokio::test(flavor = "multi_thread", worker_threads = 2)]
+async fn c5_tmux_g9b() {
+    assert_cell_passes("c5_tmux_g9b").await;
+}
+
+#[tokio::test(flavor = "multi_thread", worker_threads = 2)]
+async fn c1_auto_g8_midstream() {
+    assert_cell_passes("c1_auto_g8_midstream").await;
+}
+
+/// The formerly-declared bug: the finalize-decel fix landed, so the G4 jerk
+/// cell passes outright — I-SMOOTH-COAST (post-input motion at most one
+/// tapered cap) and I-NO-DROP (finalize discards nothing) moved from the
+/// xfail set to ordinary pass rows. The cell id keeps its historical name
+/// for artifact continuity.
+#[tokio::test(flavor = "multi_thread", worker_threads = 2)]
+async fn c1_auto_g4_jerk_xfail() {
+    assert_cell_passes("c1_auto_g4_jerk_xfail").await;
+}
+
+/// Tripwire: every curated cell has a test above (a row added to the
+/// curated tier without a matching test would otherwise silently skip CI).
+#[test]
+fn curated_cells_all_have_a_test() {
+    let covered = [
+        "c1_auto_g3_flood_speed100",
+        "c2_auto_g3_flood_speed100",
+        "c3_wheel_lines1_g1",
+        "c4_auto_g10_ambiguous",
+        "c5_tmux_g9a",
+        "c5_tmux_g9b",
+        "c1_auto_g8_midstream",
+        "c1_auto_g4_jerk_xfail",
+    ];
+    let curated_ids: Vec<&str> = curated().map(|cell| cell.id).collect();
+    assert_eq!(
+        curated_ids, covered,
+        "curated tier changed — add/remove the matching #[tokio::test] fns in this file"
+    );
+}