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-tools/src/implementations/lsp/mod.rs

@@ -0,0 +1,66 @@
+pub mod client;
+pub mod config;
+pub mod dispatch;
+pub mod format;
+pub mod manager;
+pub mod restart;
+mod types;
+
+#[cfg(test)]
+mod tests;
+
+pub use dispatch::LspBackendAdapter;
+pub use manager::{DiagnosticsSummary, LspManager, drain_lsp_diagnostics};
+pub use restart::restart_monitor;
+pub use types::{
+    DiagnosticEntry, DiagnosticSeverityLevel, FileDiagnosticEntry, LspBackend, LspConfig,
+    LspOperation, LspToolInput, LspToolResult,
+};
+
+// ── Shared types used across submodules ─────────────────────────────────
+
+use std::collections::HashMap;
+use std::path::Path;
+use std::sync::Arc;
+
+use async_lsp::lsp_types::{
+    Diagnostic, Position, TextDocumentIdentifier, TextDocumentPositionParams, Url,
+};
+
+#[derive(Debug, thiserror::Error)]
+pub enum LspError {
+    #[error("failed to spawn LSP server: {0}")]
+    SpawnFailed(String),
+    #[error("LSP server '{0}' timed out after {1:?}")]
+    Timeout(String, std::time::Duration),
+    #[error("LSP initialization failed: {0}")]
+    InitFailed(String),
+    #[error("LSP request failed: {0}")]
+    RequestFailed(String),
+    #[error("invalid file path")]
+    InvalidPath,
+}
+
+pub type DiagnosticsMap = Arc<std::sync::RwLock<HashMap<String, Vec<Diagnostic>>>>;
+pub type DiagnosticsNotify = Arc<tokio::sync::Notify>;
+pub type LspMainLoop = async_lsp::MainLoop<async_lsp::router::Router<()>>;
+
+pub fn file_uri(path: &Path) -> Result<Url, LspError> {
+    Url::from_file_path(path).map_err(|_| LspError::InvalidPath)
+}
+
+pub fn text_document_position(
+    path: &Path,
+    line: u32,
+    column: u32,
+) -> Result<TextDocumentPositionParams, LspError> {
+    Ok(TextDocumentPositionParams {
+        text_document: TextDocumentIdentifier {
+            uri: file_uri(path)?,
+        },
+        position: Position {
+            line,
+            character: column,
+        },
+    })
+}