feat: RAG 文献问答、天体目标识别、解析器模块化与批量管线扩展

核心新增：
  - RAG 问答系统：Markdown 安全切片器 (LaTeX 保护) + 向量化 + sqlite-vec 检索 + LLM 生成
  - 天体目标识别：IAU 标准正则提取 15+ 星表标识符，CDS SIMBAD/Sesame 查询与本地缓存
  - 多模态 LLM：chat_completion_with_image 支持图表视觉分析
  - CLI Skills Agent (cli.rs)：对外暴露 rag/target/ingest 等 5 个子命令
  - 解析器模块化重构：单体 778 行 → 按期刊拆分 (A&A/ar5iv/IOP/Generic/PDF) +
    common.rs 静态正则工具库

  管线与 Schema：
  - AssetSync→AssetBatch 重命名，批量管线新增 embed/target 两个处理阶段
  - 新增 paper_chunks_content (RAG 切片) 和 paper_targets (天体缓存) 两张表
  - StandardPaper 新增 has_vector 字段，所有查询同步更新

  前端：
  - 新增 AI 助手侧边栏 (RAG 问答 + 来源跳转高亮)
  - 最近浏览文献列表 (localStorage 持久化)、跨面板无缝导航
  - SyncPanel 批量阶段扩展为下拉选项，支持向量化/天体识别

  测试与清理：
  - 集成测试合并至 ads.rs 和 llm.rs，新增 chunker + target 单元测试 15 个
  - 删除旧单体 parser.rs、独立测试文件及过期 scratch 脚本

Cargo.lock

@@ -71,6 +71,56 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "anstream"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "824a212faf96e9acacdbd09febd34438f8f711fb84e09a8916013cd7815ca28d"
+dependencies = [
+ "anstyle",
+ "anstyle-parse",
+ "anstyle-query",
+ "anstyle-wincon",
+ "colorchoice",
+ "is_terminal_polyfill",
+ "utf8parse",
+]
+
+[[package]]
+name = "anstyle"
+version = "1.0.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "940b3a0ca603d1eade50a4846a2afffd5ef57a9feac2c0e2ec2e14f9ead76000"
+
+[[package]]
+name = "anstyle-parse"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "52ce7f38b242319f7cabaa6813055467063ecdc9d355bbb4ce0c68908cd8130e"
+dependencies = [
+ "utf8parse",
+]
+
+[[package]]
+name = "anstyle-query"
+version = "1.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "40c48f72fd53cd289104fc64099abca73db4166ad86ea0b4341abe65af83dadc"
+dependencies = [
+ "windows-sys 0.61.2",
+]
+
+[[package]]
+name = "anstyle-wincon"
+version = "3.0.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "291e6a250ff86cd4a820112fb8898808a366d8f9f58ce16d1f538353ad55747d"
+dependencies = [
+ "anstyle",
+ "once_cell_polyfill",
+ "windows-sys 0.61.2",
+]
+
 [[package]]
 name = "anyhow"
 version = "1.0.102"
@@ -85,11 +135,13 @@ dependencies = [
  "axum",
  "base64 0.22.1",
  "chrono",
+ "clap",
  "dotenvy",
  "flate2",
  "futures-util",
  "hmac 0.12.1",
  "html2md",
+ "libsqlite3-sys",
  "obscura-browser",
  "obscura-net",
  "quick-xml",
@@ -99,6 +151,7 @@ dependencies = [
  "serde",
  "serde_json",
  "sha1 0.10.6",
+ "sqlite-vec",
  "sqlx",
  "thiserror 1.0.69",
  "tokio",
@@ -527,6 +580,46 @@ dependencies = [
  "libloading",
 ]
 
+[[package]]
+name = "clap"
+version = "4.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1ddb117e43bbf7dacf0a4190fef4d345b9bad68dfc649cb349e7d17d28428e51"
+dependencies = [
+ "clap_builder",
+ "clap_derive",
+]
+
+[[package]]
+name = "clap_builder"
+version = "4.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "714a53001bf66416adb0e2ef5ac857140e7dc3a0c48fb28b2f10762fc4b5069f"
+dependencies = [
+ "anstream",
+ "anstyle",
+ "clap_lex",
+ "strsim",
+]
+
+[[package]]
+name = "clap_derive"
+version = "4.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f2ce8604710f6733aa641a2b3731eaa1e8b3d9973d5e3565da11800813f997a9"
+dependencies = [
+ "heck 0.5.0",
+ "proc-macro2",
+ "quote",
+ "syn 2.0.117",
+]
+
+[[package]]
+name = "clap_lex"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c8d4a3bb8b1e0c1050499d1815f5ab16d04f0959b233085fb31653fbfc9d98f9"
+
 [[package]]
 name = "cmake"
 version = "0.1.58"
@@ -542,6 +635,12 @@ version = "0.5.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0c9ea0ac24bc397ab3c98583a3c9ba74fa56b09a4449bbe172b9b1ddb016027a"
 
+[[package]]
+name = "colorchoice"
+version = "1.0.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1d07550c9036bf2ae0c684c4297d503f838287c83c53686d05370d0e139ae570"
+
 [[package]]
 name = "combine"
 version = "4.6.7"
@@ -1768,6 +1867,12 @@ version = "2.12.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d98f6fed1fde3f8c21bc40a1abb88dd75e67924f9cffc3ef95607bad8017f8e2"
 
+[[package]]
+name = "is_terminal_polyfill"
+version = "1.70.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a6cb138bb79a146c1bd460005623e142ef0181e3d0219cb493e02f7d08a35695"
+
 [[package]]
 name = "itertools"
 version = "0.13.0"
@@ -2289,6 +2394,12 @@ version = "1.21.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9f7c3e4beb33f85d45ae3e3a1792185706c8e16d043238c593331cc7cd313b50"
 
+[[package]]
+name = "once_cell_polyfill"
+version = "1.70.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "384b8ab6d37215f3c5301a95a4accb5d64aa607f1fcb26a11b5303878451b4fe"
+
 [[package]]
 name = "openssl-macros"
 version = "0.1.1"
@@ -3256,6 +3367,15 @@ dependencies = [
  "unicode_categories",
 ]
 
+[[package]]
+name = "sqlite-vec"
+version = "0.1.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d0ba424237a9a5db2f6071f193319e2b6a32f7f3961debb2fbbfe67067abce3f"
+dependencies = [
+ "cc",
+]
+
 [[package]]
 name = "sqlx"
 version = "0.7.4"
@@ -3511,6 +3631,12 @@ dependencies = [
  "unicode-properties",
 ]
 
+[[package]]
+name = "strsim"
+version = "0.11.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7da8b5736845d9f2fcb837ea5d9e2628564b3b043a70948a3f0b778838c5fb4f"
+
 [[package]]
 name = "strum"
 version = "0.27.2"
@@ -4122,6 +4248,12 @@ version = "1.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b6c140620e7ffbb22c2dee59cafe6084a59b5ffc27a8859a5f0d494b5d52b6be"
 
+[[package]]
+name = "utf8parse"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "06abde3611657adf66d383f00b093d7faecc7fa57071cce2578660c9f1010821"
+
 [[package]]
 name = "uuid"
 version = "1.23.2"