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-agent/scripts/encrypt_templates.py

@@ -0,0 +1,58 @@
+#!/usr/bin/env python3
+"""Regenerate src/prompt/prompt_encrypted.rs from the templates/ directory.
+
+Run from this crate directory:
+    python3 scripts/encrypt_templates.py
+"""
+
+from pathlib import Path
+
+SEEDS = {
+    "BASE_PROMPT_ENC": 0x5A,
+    "CODEX_PROMPT_ENC": 0x7B,
+    "SUBAGENT_PROMPT_ENC": 0x3D,
+}
+TEMPLATES = {
+    "BASE_PROMPT_ENC": "prompt.md",
+    "CODEX_PROMPT_ENC": "apply_patch_prompt.md",
+    "SUBAGENT_PROMPT_ENC": "subagent_prompt.md",
+}
+
+SCRIPT_DIR = Path(__file__).resolve().parent
+CRATE_DIR = SCRIPT_DIR.parent
+TEMPLATE_DIR = CRATE_DIR / "templates"
+OUT_PATH = CRATE_DIR / "src" / "prompt" / "prompt_encrypted.rs"
+
+
+def xor_encrypt(data: bytes, seed: int) -> bytes:
+    return bytes(b ^ ((seed + i) & 0xFF) for i, b in enumerate(data))
+
+
+def main():
+    lines = [
+        "// Auto-generated -- do not edit.",
+        "// Regenerate: python3 scripts/encrypt_templates.py",
+        "// XOR-encrypted prompt templates (key = position-dependent seed).",
+        "",
+    ]
+    for const_name, filename in TEMPLATES.items():
+        path = TEMPLATE_DIR / filename
+        data = path.read_bytes()
+        enc = xor_encrypt(data, SEEDS[const_name])
+        arr = ", ".join(str(b) for b in enc)
+        # `#[rustfmt::skip]` keeps the multi-KB byte array on a single line so
+        # rustfmt does not reflow it across thousands of lines on every fmt run.
+        lines.append("#[rustfmt::skip]")
+        lines.append(f"pub(crate) const {const_name}: &[u8] = &[{arr}];")
+        lines.append("")
+
+    seeds_arr = ", ".join(f"0x{s:02X}" for s in SEEDS.values())
+    lines.append(f"pub(crate) const PROMPT_SEEDS: [u8; {len(SEEDS)}] = [{seeds_arr}];")
+    lines.append("")
+
+    OUT_PATH.write_text("\n".join(lines))
+    print(f"Wrote {OUT_PATH.relative_to(CRATE_DIR)}")
+
+
+if __name__ == "__main__":
+    main()