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-tui/tests/scenarios/vim_modal_command_palette.yaml

@@ -0,0 +1,92 @@
+name: vim-modal-command-palette
+description: >
+  Type-to-find pickers default to INPUT on open while staying vim-toggleable.
+  With vim-mode ON, the command palette opens in INPUT mode: a letter filters the
+  list immediately (no-match query shows "No matches"). Esc clears the query
+  (command palette's modal chrome clears search text first); a second Esc drops to
+  NAV mode where letters no longer filter; `i` re-enters INPUT (a letter filters
+  again). The footer surfaces an `i search` hint in NAV mode (discoverability) and
+  hides it in INPUT mode. Drives the real pager via the scripted ptyctl runner.
+terminal:
+  rows: 40
+  cols: 110
+mock:
+  response: "SCRIPTED_VIM_MODAL acknowledged."
+steps:
+  - action: wait_for_text
+    text: Quit
+    timeout_ms: 20000
+  # Promote welcome → session so we are unambiguously on the agent screen.
+  - action: type_text
+    text: "hello"
+  - action: keys
+    keys: "<Enter>"
+  - action: wait_for_text
+    text: SCRIPTED_VIM_MODAL
+    timeout_ms: 30000
+  # Turn vim-mode ON (the setting that gates vim_normal_first at the call sites).
+  - action: type_text
+    text: "/vim-mode"
+  - action: keys
+    keys: "<Enter>"
+  - action: wait_for_text
+    text: "Vim mode: on"
+    timeout_ms: 10000
+  # Open the command palette (Ctrl+P) — opens in INPUT mode (type-to-find).
+  - action: keys
+    keys: "<C-p>"
+  - action: wait_for_text
+    text: Commands
+    timeout_ms: 10000
+  - action: assert_contains
+    text: New Session
+  # INPUT mode on open: the footer does NOT advertise the `i` search hint.
+  - action: assert_not_contains
+    text: i search
+  # INPUT mode on open: a letter filters immediately. "xyz" matches nothing → "No matches".
+  - action: type_text
+    text: "xyz"
+  - action: wait
+    millis: 200
+  - action: assert_contains
+    text: No matches
+  # Esc clears the query (command palette chrome) → list restored, still input.
+  - action: keys
+    keys: "<Esc>"
+  - action: wait
+    millis: 200
+  - action: assert_not_contains
+    text: No matches
+  - action: assert_contains
+    text: New Session
+  # Second Esc (empty query) drops to NAV mode via the picker's vim Esc.
+  - action: keys
+    keys: "<Esc>"
+  - action: wait
+    millis: 200
+  # NAV mode: the footer now advertises `i search` so users discover how to type.
+  - action: assert_contains
+    text: i search
+  # NAV mode: typing a letter must NOT filter (list stays intact, no "No matches").
+  - action: type_text
+    text: "xyz"
+  - action: wait
+    millis: 200
+  - action: assert_not_contains
+    text: No matches
+  - action: assert_contains
+    text: New Session
+  # `i` re-enters INPUT mode; typing now filters again → "No matches".
+  - action: keys
+    keys: "i"
+  - action: type_text
+    text: "xyz"
+  - action: wait
+    millis: 200
+  - action: assert_contains
+    text: No matches
+  - action: assert_not_contains
+    text: panicked
+  - action: screenshot
+    name: vim-modal-command-palette
+    note: Command palette input-default, Esc clears query, Esc→nav (no filter), i→input.