feat: Agent 全栈升级——模块化重构、Hooks/Skills/Memory/SubAgent/Team 子系统、审计与任务持久化

架构重构：
  - Agent Runtime 由单文件拆为 runtime/ 目录 12 模块（熔断/流式执行/Token预算/文件缓存/权限等）
  - Agent Tools 由单文件拆为 tools/ 目录 20+ 模块（filesystem/astro/memory/skill/subagent/team 等）
  - 解析器体系重构（common.rs 836行变更），各解析器同步升级
  - Download 服务重构（562行），反爬策略强化
  - LLM 客户端重构（266行），流式调用优化

  新子系统：
  - Hooks 生命周期系统（9种事件类型，PreToolUse/PostToolUse 支持输入输出拦截）
  - Skills 双层加载系统（system-reminder 轻量注入 + LoadSkillTool 按需加载，notify 文件监听热更新）
  - Memory 项目记忆管理（类型/提取/去重/衰减/保活/选择策略/护栏 7 模块）
  - SubAgent 上下文隔离子代理运行器（独立 ReAct 循环 + Hook 管道）
  - Team 多智能体团队协作（文件 inbox 通信、lead/teammate 协调）
  - TaskBoard DAG 任务依赖管理
  - Trajectory 会话轨迹、Terminal 终止信号、Autonomous 自主模式、Background 异步通知

  数据库：
  - agent_tasks 表（DAG 依赖模式，blocked_by JSON 数组）
  - agent_audit_log 表（工具调用审计：名称/状态/耗时/输出预览）
  - agent_identity 迁移（消息/审计/任务的 agent_name 归属，agent_team_members 团队注册表）

  API：
  - GET /chat/metrics 聚合指标端点
  - GET /chat/sessions/:id/audit 会话审计查询
  - GET /chat/questions + POST /chat/answer 人机交互问答

  工程：
  - 新增依赖：serde_yaml、notify、glob、walkdir、lru
  - Skills 目录含 methodology/plotting/presentation 三个初始 SKILL.md
  - CLAUDE.md 完整项目架构文档

Cargo.lock

@@ -141,9 +141,12 @@ dependencies = [
  "dotenvy",
  "flate2",
  "futures-util",
+ "glob",
  "hmac 0.12.1",
  "html2md",
  "libsqlite3-sys",
+ "lru 0.12.5",
+ "notify",
  "obscura-browser",
  "obscura-net",
  "quick-xml",
@@ -152,6 +155,7 @@ dependencies = [
  "reqwest",
  "serde",
  "serde_json",
+ "serde_yaml",
  "sha1 0.10.6",
  "sqlite-vec",
  "sqlx",
@@ -164,6 +168,7 @@ dependencies = [
  "url",
  "urlencoding",
  "uuid",
+ "walkdir",
  "zip",
 ]
 
@@ -350,7 +355,7 @@ version = "0.71.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5f58bf3d7db68cfbac37cfc485a8d711e87e064c3d0fe0435b92f7a407f9d6b3"
 dependencies = [
- "bitflags",
+ "bitflags 2.13.0",
  "cexpr",
  "clang-sys",
  "itertools",
@@ -370,7 +375,7 @@ version = "0.72.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "993776b509cfb49c750f11b8f07a46fa23e0a1386ffc01fb1e7d343efc387895"
 dependencies = [
- "bitflags",
+ "bitflags 2.13.0",
  "cexpr",
  "clang-sys",
  "itertools",
@@ -397,6 +402,12 @@ version = "0.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5e764a1d40d510daf35e07be9eb06e75770908c27d411ee6c92109c9840eaaf7"
 
+[[package]]
+name = "bitflags"
+version = "1.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
+
 [[package]]
 name = "bitflags"
 version = "2.13.0"
@@ -464,7 +475,7 @@ version = "0.5.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2c5e60b8c8d282c86360cab651ded04ab0335a7b5390c8d34145cbeab8cacf5f"
 dependencies = [
- "bitflags",
+ "bitflags 2.13.0",
  "btls-sys",
  "foreign-types",
  "libc",
@@ -1161,6 +1172,16 @@ version = "2.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9f1f227452a390804cdb637b74a86990f2a7d7ba4b7d5693aac9b4dd6defd8d6"
 
+[[package]]
+name = "filetime"
+version = "0.2.29"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5c287a33c7f0a620c38e641e7f60827713987b3c0f26e8ddc9462cc69cf75759"
+dependencies = [
+ "cfg-if",
+ "libc",
+]
+
 [[package]]
 name = "find-msvc-tools"
 version = "0.1.9"
@@ -1466,6 +1487,8 @@ version = "0.15.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9229cfe53dfd69f0609a49f65461bd93001ea1ef889cd5529dd176593f5338a1"
 dependencies = [
+ "allocator-api2",
+ "equivalent",
  "foldhash 0.1.5",
 ]
 
@@ -1876,6 +1899,26 @@ dependencies = [
  "serde_core",
 ]
 
+[[package]]
+name = "inotify"
+version = "0.9.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f8069d3ec154eb856955c1c0fbffefbf5f3c40a104ec912d4797314c1801abff"
+dependencies = [
+ "bitflags 1.3.2",
+ "inotify-sys",
+ "libc",
+]
+
+[[package]]
+name = "inotify-sys"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e05c02b5e89bff3b946cedeca278abc628fe811e604f027c45a8aa3cf793d0eb"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "inout"
 version = "0.2.2"
@@ -1976,6 +2019,26 @@ dependencies = [
  "wasm-bindgen",
 ]
 
+[[package]]
+name = "kqueue"
+version = "1.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "273c0752728918e0ac4976f2b275b6fefb9ecd400585dec929419f3844cd87b5"
+dependencies = [
+ "kqueue-sys",
+ "libc",
+]
+
+[[package]]
+name = "kqueue-sys"
+version = "1.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "07293a4e297ac234359b510362495713f75ea345d5307140414f20c69ffeb087"
+dependencies = [
+ "bitflags 2.13.0",
+ "libc",
+]
+
 [[package]]
 name = "lazy_static"
 version = "1.5.0"
@@ -2025,7 +2088,7 @@ version = "0.1.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f02ab6bace2054fb888a3c16f990117b579d14a3088e472d63c6011fa185c9d3"
 dependencies = [
- "bitflags",
+ "bitflags 2.13.0",
  "libc",
  "plain",
  "redox_syscall 0.8.1",
@@ -2081,6 +2144,15 @@ version = "0.4.32"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "953f07c43838f8e6f9758cab68bf5bed85465e7587ebe0b823f1bcd81978ad3a"
 
+[[package]]
+name = "lru"
+version = "0.12.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "234cf4f4a04dc1f57e24b96cc0cd600cf2af460d4161ac5ecdd0af8e1f3b2a38"
+dependencies = [
+ "hashbrown 0.15.5",
+]
+
 [[package]]
 name = "lru"
 version = "0.18.0"
@@ -2225,6 +2297,18 @@ dependencies = [
  "simd-adler32",
 ]
 
+[[package]]
+name = "mio"
+version = "0.8.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a4a650543ca06a924e8b371db273b2756685faae30f8487da1b56505a8f78b0c"
+dependencies = [
+ "libc",
+ "log",
+ "wasi",
+ "windows-sys 0.48.0",
+]
+
 [[package]]
 name = "mio"
 version = "1.2.1"
@@ -2269,6 +2353,23 @@ dependencies = [
  "minimal-lexical",
 ]
 
+[[package]]
+name = "notify"
+version = "6.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6205bd8bb1e454ad2e27422015fb5e4f2bcc7e08fa8f27058670d208324a4d2d"
+dependencies = [
+ "bitflags 2.13.0",
+ "filetime",
+ "inotify",
+ "kqueue",
+ "libc",
+ "log",
+ "mio 0.8.11",
+ "walkdir",
+ "windows-sys 0.48.0",
+]
+
 [[package]]
 name = "nu-ansi-term"
 version = "0.50.3"
@@ -2857,7 +2958,7 @@ version = "0.5.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ed2bf2547551a7053d6fdfafda3f938979645c44812fbfcda098faae3f1a362d"
 dependencies = [
- "bitflags",
+ "bitflags 2.13.0",
 ]
 
 [[package]]
@@ -2866,7 +2967,7 @@ version = "0.8.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5b44b894f2a6e36457d665d1e08c3866add6ed5e70050c1b4ba8a8ddedb02ce7"
 dependencies = [
- "bitflags",
+ "bitflags 2.13.0",
 ]
 
 [[package]]
@@ -2988,7 +3089,7 @@ version = "0.38.44"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "fdb5bc1ae2baa591800df16c9ca78619bf65c0488b41b96ccec5d11220d8c154"
 dependencies = [
- "bitflags",
+ "bitflags 2.13.0",
  "errno",
  "libc",
  "linux-raw-sys 0.4.15",
@@ -3001,7 +3102,7 @@ version = "1.1.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b6fe4565b9518b83ef4f91bb47ce29620ca828bd32cb7e408f0062e9930ba190"
 dependencies = [
- "bitflags",
+ "bitflags 2.13.0",
  "errno",
  "libc",
  "linux-raw-sys 0.12.1",
@@ -3116,7 +3217,7 @@ version = "0.26.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "fd568a4c9bb598e291a08244a5c1f5a8a6650bee243b5b0f8dbb3d9cc1d87fe8"
 dependencies = [
- "bitflags",
+ "bitflags 2.13.0",
  "cssparser",
  "derive_more",
  "fxhash",
@@ -3216,6 +3317,19 @@ dependencies = [
  "v8",
 ]
 
+[[package]]
+name = "serde_yaml"
+version = "0.9.34+deprecated"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6a8b1a1a2ebf674015cc02edccce75287f1a0130d394307b36743c2f5d504b47"
+dependencies = [
+ "indexmap",
+ "itoa",
+ "ryu",
+ "serde",
+ "unsafe-libyaml",
+]
+
 [[package]]
 name = "servo_arc"
 version = "0.4.3"
@@ -3503,7 +3617,7 @@ checksum = "1ed31390216d20e538e447a7a9b959e06ed9fc51c37b514b46eb758016ecd418"
 dependencies = [
  "atoi",
  "base64 0.21.7",
- "bitflags",
+ "bitflags 2.13.0",
  "byteorder",
  "bytes",
  "chrono",
@@ -3546,7 +3660,7 @@ checksum = "7c824eb80b894f926f89a0b9da0c7f435d27cdd35b8c655b114e58223918577e"
 dependencies = [
  "atoi",
  "base64 0.21.7",
- "bitflags",
+ "bitflags 2.13.0",
  "byteorder",
  "chrono",
  "crc",
@@ -3900,7 +4014,7 @@ checksum = "8fc7f01b389ac15039e4dc9531aa973a135d7a4135281b12d7c1bc79fd57fffe"
 dependencies = [
  "bytes",
  "libc",
- "mio",
+ "mio 1.2.1",
  "parking_lot",
  "pin-project-lite",
  "signal-hook-registry",
@@ -3998,7 +4112,7 @@ version = "0.5.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1e9cd434a998747dd2c4276bc96ee2e0c7a2eadf3cae88e52be55a05fa9053f5"
 dependencies = [
- "bitflags",
+ "bitflags 2.13.0",
  "bytes",
  "futures-util",
  "http",
@@ -4024,7 +4138,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4cfcf7e2740e6fc6d4d688b4ef00650406bb94adf4731e43c096c3a19fe40840"
 dependencies = [
  "async-compression",
- "bitflags",
+ "bitflags 2.13.0",
  "bytes",
  "futures-core",
  "futures-util",
@@ -4235,6 +4349,12 @@ version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "39ec24b3121d976906ece63c9daad25b85969647682eee313cb5779fdd69e14e"
 
+[[package]]
+name = "unsafe-libyaml"
+version = "0.2.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "673aac59facbab8a9007c7f6108d11f63b603f7cabff99fabf650fea5c32b861"
+
 [[package]]
 name = "untrusted"
 version = "0.9.0"
@@ -4296,7 +4416,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "33995a1fee055ff743281cde33a41f0d618ee0bdbe8bdf6859e11864499c2595"
 dependencies = [
  "bindgen 0.71.1",
- "bitflags",
+ "bitflags 2.13.0",
  "fslock",
  "gzip-header",
  "home",
@@ -4484,7 +4604,7 @@ version = "0.244.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "47b807c72e1bac69382b3a6fb3dbe8ea4c0ed87ff5629b8685ae6b9a611028fe"
 dependencies = [
- "bitflags",
+ "bitflags 2.13.0",
  "hashbrown 0.15.5",
  "indexmap",
  "semver",
@@ -4864,7 +4984,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9d66ea20e9553b30172b5e831994e35fbde2d165325bec84fc43dbf6f4eb9cb2"
 dependencies = [
  "anyhow",
- "bitflags",
+ "bitflags 2.13.0",
  "indexmap",
  "log",
  "serde",
@@ -4911,7 +5031,7 @@ dependencies = [
  "httparse",
  "ipnet",
  "libc",
- "lru",
+ "lru 0.18.0",
  "percent-encoding",
  "pin-project-lite",
  "socket2",