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-workspace/src/permission/mod.rs

@@ -0,0 +1,45 @@
+pub mod auto_mode;
+pub mod claude_settings;
+mod hub_permission;
+mod manager;
+mod policy;
+mod prompter;
+pub mod resolution;
+pub mod rules;
+mod shell_access;
+mod state;
+pub mod types;
+
+pub use auto_mode::{
+    AUTO_MODE_CLASSIFIER_SYSTEM_PROMPT, AutoFastPath, CLASSIFIER_TURN_MAX_LEN, ClassifierContext,
+    ClassifierMessage, ClassifierMessageRole, ClassifierPromptType, ClassifierTurn,
+    ClassifierVerdict, ClassifyTextChannel, ClassifyTextFn, FixedClassifier,
+    HeuristicPermissionClassifier, LlmPermissionClassifier, PermissionClassifier, SharedClassifier,
+    access_requires_user_interaction, auto_mode_fast_path, build_classifier_messages,
+    classifier_output_json_schema, default_auto_mode_classifier, is_auto_mode_allowlisted_access,
+    is_auto_mode_allowlisted_tool_name, parse_classifier_model_text, permission_decision_args,
+};
+pub use hub_permission::{
+    PermissionHookTransport, ToolServerPermissionTransport, access_kind_for_hub_tool,
+    hitl_permission_live_enabled, prompt_outcome_allows, request_permission_via_hub,
+};
+
+/// Zero-init this module's metric families. See [`crate::init_metrics`].
+pub(crate) fn init_metrics() {
+    hub_permission::init_metrics();
+}
+pub use manager::{
+    PermissionHandle, default_always_allow_scope, spawn_permission_manager,
+    spawn_permission_manager_with_hub,
+};
+pub use policy::CompiledPolicy;
+pub use prompter::{
+    ALLOW_EDITS_SESSION_OPTION_ID, AcpPrompter, BashCommandPermission, BashCommandSelectedTerms,
+    ENABLE_ALWAYS_APPROVE_OPTION_ID, MCP_TOOL_NAME_DELIMITER, McpScopeSelection, McpToolPermission,
+    PromptOutcome, is_enable_always_approve_option, mcp_pretty_name_if_qualified,
+    mcp_titleize_segment, mcp_tool_action, mcp_tool_display_name,
+};
+pub use state::PermissionState;
+pub use state::cleanup_stale_permission_state;
+pub use types::{AccessKind, ClientType, Decision, PermissionCommand, PermissionEvent};
+pub mod bash_command_splitting;