refactor(report): switch to HTML+Gotenberg for high-quality PDF export

- Feat: Add Gotenberg service to docker-compose for headless PDF rendering
- Feat: Implement /generate-pdf endpoint in report-generator-service
- Feat: Add PDF generation proxy route in api-gateway
- Refactor(frontend): Rewrite PDFExportButton to generate HTML with embedded styles and images
- Feat(frontend): Auto-crop React Flow screenshots to remove whitespace
- Style: Optimize report print layout with CSS (margins, image sizing)
- Chore: Remove legacy react-pdf code and font files

Cargo.lock

@@ -320,6 +320,7 @@ dependencies = [
  "matchit",
  "memchr",
  "mime",
+ "multer",
  "percent-encoding",
  "pin-project-lite",
  "serde_core",
@@ -2376,6 +2377,23 @@ dependencies = [
  "workflow-context",
 ]
 
+[[package]]
+name = "multer"
+version = "3.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "83e87776546dc87511aa5ee218730c92b666d7264ab6ed41f9d215af9cd5224b"
+dependencies = [
+ "bytes",
+ "encoding_rs",
+ "futures-util",
+ "http",
+ "httparse",
+ "memchr",
+ "mime",
+ "spin",
+ "version_check",
+]
+
 [[package]]
 name = "native-tls"
 version = "0.2.14"

docker-compose.yml

@@ -312,12 +312,14 @@ services:
       SERVER_PORT: 8004
       NATS_ADDR: nats://nats:4222
       DATA_PERSISTENCE_SERVICE_URL: http://data-persistence-service:3000
+      GOTENBERG_URL: http://gotenberg:3000
       WORKFLOW_DATA_PATH: /mnt/workflow_data
       RUST_LOG: info,axum=info
       RUST_BACKTRACE: "1"
     depends_on:
       - nats
       - data-persistence-service
+      - gotenberg
     networks:
       - app-network
     healthcheck:
@@ -326,6 +328,14 @@ services:
       timeout: 5s
       retries: 12
 
+  gotenberg:
+    image: gotenberg/gotenberg:8
+    container_name: gotenberg
+    ports:
+      - "3000:3000"
+    networks:
+      - app-network
+
   workflow-orchestrator-service:
     build:
       context: .

frontend/package-lock.json

@@ -19,14 +19,17 @@
         "@radix-ui/react-slot": "^1.2.4",
         "@radix-ui/react-tabs": "^1.1.13",
         "@radix-ui/react-tooltip": "^1.2.8",
+        "@react-pdf/renderer": "^4.3.1",
         "@tanstack/react-query": "^5.90.10",
         "@zodios/core": "^10.9.6",
         "axios": "^1.13.2",
+        "buffer": "^6.0.3",
         "class-variance-authority": "^0.7.1",
         "clsx": "^2.1.1",
         "cmdk": "^1.1.1",
         "date-fns": "^4.1.0",
         "elkjs": "^0.11.0",
+        "html-to-image": "^1.11.13",
         "lucide-react": "^0.554.0",
         "react": "^19.2.0",
         "react-dom": "^19.2.0",
@@ -402,6 +405,15 @@
         "@babel/core": "^7.0.0-0"
       }
     },
+    "node_modules/@babel/runtime": {
+      "version": "7.28.4",
+      "resolved": "http://npm.repo.lan/@babel/runtime/-/runtime-7.28.4.tgz",
+      "integrity": "sha512-Q/N6JNWvIvPnLDvjlE1OUBLPQHH6l3CltCEsHIujp45zQUSSh8K+gHnaEX45yAT1nyngnINhvWtzN+Nb9D8RAQ==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=6.9.0"
+      }
+    },
     "node_modules/@babel/template": {
       "version": "7.27.2",
       "resolved": "https://registry.npmjs.org/@babel/template/-/template-7.27.2.tgz",
@@ -2265,6 +2277,180 @@
       "integrity": "sha512-HPwpGIzkl28mWyZqG52jiqDJ12waP11Pa1lGoiyUkIEuMLBP0oeK/C89esbXrxsky5we7dfd8U58nm0SgAWpVw==",
       "license": "MIT"
     },
+    "node_modules/@react-pdf/fns": {
+      "version": "3.1.2",
+      "resolved": "http://npm.repo.lan/@react-pdf/fns/-/fns-3.1.2.tgz",
+      "integrity": "sha512-qTKGUf0iAMGg2+OsUcp9ffKnKi41RukM/zYIWMDJ4hRVYSr89Q7e3wSDW/Koqx3ea3Uy/z3h2y3wPX6Bdfxk6g==",
+      "license": "MIT"
+    },
+    "node_modules/@react-pdf/font": {
+      "version": "4.0.3",
+      "resolved": "http://npm.repo.lan/@react-pdf/font/-/font-4.0.3.tgz",
+      "integrity": "sha512-N1qQDZr6phXYQOp033Hvm2nkUkx2LkszjGPbmRavs9VOYzi4sp31MaccMKptL24ii6UhBh/z9yPUhnuNe/qHwA==",
+      "license": "MIT",
+      "dependencies": {
+        "@react-pdf/pdfkit": "^4.0.4",
+        "@react-pdf/types": "^2.9.1",
+        "fontkit": "^2.0.2",
+        "is-url": "^1.2.4"
+      }
+    },
+    "node_modules/@react-pdf/image": {
+      "version": "3.0.3",
+      "resolved": "http://npm.repo.lan/@react-pdf/image/-/image-3.0.3.tgz",
+      "integrity": "sha512-lvP5ryzYM3wpbO9bvqLZYwEr5XBDX9jcaRICvtnoRqdJOo7PRrMnmB4MMScyb+Xw10mGeIubZAAomNAG5ONQZQ==",
+      "license": "MIT",
+      "dependencies": {
+        "@react-pdf/png-js": "^3.0.0",
+        "jay-peg": "^1.1.1"
+      }
+    },
+    "node_modules/@react-pdf/layout": {
+      "version": "4.4.1",
+      "resolved": "http://npm.repo.lan/@react-pdf/layout/-/layout-4.4.1.tgz",
+      "integrity": "sha512-GVzdlWoZWldRDzlWj3SttRXmVDxg7YfraAohwy+o9gb9hrbDJaaAV6jV3pc630Evd3K46OAzk8EFu8EgPDuVuA==",
+      "license": "MIT",
+      "dependencies": {
+        "@react-pdf/fns": "3.1.2",
+        "@react-pdf/image": "^3.0.3",
+        "@react-pdf/primitives": "^4.1.1",
+        "@react-pdf/stylesheet": "^6.1.1",
+        "@react-pdf/textkit": "^6.0.0",
+        "@react-pdf/types": "^2.9.1",
+        "emoji-regex-xs": "^1.0.0",
+        "queue": "^6.0.1",
+        "yoga-layout": "^3.2.1"
+      }
+    },
+    "node_modules/@react-pdf/pdfkit": {
+      "version": "4.0.4",
+      "resolved": "http://npm.repo.lan/@react-pdf/pdfkit/-/pdfkit-4.0.4.tgz",
+      "integrity": "sha512-/nITLggsPlB66bVLnm0X7MNdKQxXelLGZG6zB5acF5cCgkFwmXHnLNyxYOUD4GMOMg1HOPShXDKWrwk2ZeHsvw==",
+      "license": "MIT",
+      "dependencies": {
+        "@babel/runtime": "^7.20.13",
+        "@react-pdf/png-js": "^3.0.0",
+        "browserify-zlib": "^0.2.0",
+        "crypto-js": "^4.2.0",
+        "fontkit": "^2.0.2",
+        "jay-peg": "^1.1.1",
+        "linebreak": "^1.1.0",
+        "vite-compatible-readable-stream": "^3.6.1"
+      }
+    },
+    "node_modules/@react-pdf/png-js": {
+      "version": "3.0.0",
+      "resolved": "http://npm.repo.lan/@react-pdf/png-js/-/png-js-3.0.0.tgz",
+      "integrity": "sha512-eSJnEItZ37WPt6Qv5pncQDxLJRK15eaRwPT+gZoujP548CodenOVp49GST8XJvKMFt9YqIBzGBV/j9AgrOQzVA==",
+      "license": "MIT",
+      "dependencies": {
+        "browserify-zlib": "^0.2.0"
+      }
+    },
+    "node_modules/@react-pdf/primitives": {
+      "version": "4.1.1",
+      "resolved": "http://npm.repo.lan/@react-pdf/primitives/-/primitives-4.1.1.tgz",
+      "integrity": "sha512-IuhxYls1luJb7NUWy6q5avb1XrNaVj9bTNI40U9qGRuS6n7Hje/8H8Qi99Z9UKFV74bBP3DOf3L1wV2qZVgVrQ==",
+      "license": "MIT"
+    },
+    "node_modules/@react-pdf/reconciler": {
+      "version": "1.1.4",
+      "resolved": "http://npm.repo.lan/@react-pdf/reconciler/-/reconciler-1.1.4.tgz",
+      "integrity": "sha512-oTQDiR/t4Z/Guxac88IavpU2UgN7eR0RMI9DRKvKnvPz2DUasGjXfChAdMqDNmJJxxV26mMy9xQOUV2UU5/okg==",
+      "license": "MIT",
+      "dependencies": {
+        "object-assign": "^4.1.1",
+        "scheduler": "0.25.0-rc-603e6108-20241029"
+      },
+      "peerDependencies": {
+        "react": "^16.8.0 || ^17.0.0 || ^18.0.0 || ^19.0.0"
+      }
+    },
+    "node_modules/@react-pdf/reconciler/node_modules/scheduler": {
+      "version": "0.25.0-rc-603e6108-20241029",
+      "resolved": "http://npm.repo.lan/scheduler/-/scheduler-0.25.0-rc-603e6108-20241029.tgz",
+      "integrity": "sha512-pFwF6H1XrSdYYNLfOcGlM28/j8CGLu8IvdrxqhjWULe2bPcKiKW4CV+OWqR/9fT52mywx65l7ysNkjLKBda7eA==",
+      "license": "MIT"
+    },
+    "node_modules/@react-pdf/render": {
+      "version": "4.3.1",
+      "resolved": "http://npm.repo.lan/@react-pdf/render/-/render-4.3.1.tgz",
+      "integrity": "sha512-v1WAaAhQShQZGcBxfjkEThGCHVH9CSuitrZ1bIOLvB5iBKM14abYK5D6djKhWCwF6FTzYeT2WRjRMVgze/ND2A==",
+      "license": "MIT",
+      "dependencies": {
+        "@babel/runtime": "^7.20.13",
+        "@react-pdf/fns": "3.1.2",
+        "@react-pdf/primitives": "^4.1.1",
+        "@react-pdf/textkit": "^6.0.0",
+        "@react-pdf/types": "^2.9.1",
+        "abs-svg-path": "^0.1.1",
+        "color-string": "^1.9.1",
+        "normalize-svg-path": "^1.1.0",
+        "parse-svg-path": "^0.1.2",
+        "svg-arc-to-cubic-bezier": "^3.2.0"
+      }
+    },
+    "node_modules/@react-pdf/renderer": {
+      "version": "4.3.1",
+      "resolved": "http://npm.repo.lan/@react-pdf/renderer/-/renderer-4.3.1.tgz",
+      "integrity": "sha512-dPKHiwGTaOsKqNWCHPYYrx8CDfAGsUnV4tvRsEu0VPGxuot1AOq/M+YgfN/Pb+MeXCTe2/lv6NvA8haUtj3tsA==",
+      "license": "MIT",
+      "dependencies": {
+        "@babel/runtime": "^7.20.13",
+        "@react-pdf/fns": "3.1.2",
+        "@react-pdf/font": "^4.0.3",
+        "@react-pdf/layout": "^4.4.1",
+        "@react-pdf/pdfkit": "^4.0.4",
+        "@react-pdf/primitives": "^4.1.1",
+        "@react-pdf/reconciler": "^1.1.4",
+        "@react-pdf/render": "^4.3.1",
+        "@react-pdf/types": "^2.9.1",
+        "events": "^3.3.0",
+        "object-assign": "^4.1.1",
+        "prop-types": "^15.6.2",
+        "queue": "^6.0.1"
+      },
+      "peerDependencies": {
+        "react": "^16.8.0 || ^17.0.0 || ^18.0.0 || ^19.0.0"
+      }
+    },
+    "node_modules/@react-pdf/stylesheet": {
+      "version": "6.1.1",
+      "resolved": "http://npm.repo.lan/@react-pdf/stylesheet/-/stylesheet-6.1.1.tgz",
+      "integrity": "sha512-Iyw0A3wRIeQLN4EkaKf8yF9MvdMxiZ8JjoyzLzDHSxnKYoOA4UGu84veCb8dT9N8MxY5x7a0BUv/avTe586Plg==",
+      "license": "MIT",
+      "dependencies": {
+        "@react-pdf/fns": "3.1.2",
+        "@react-pdf/types": "^2.9.1",
+        "color-string": "^1.9.1",
+        "hsl-to-hex": "^1.0.0",
+        "media-engine": "^1.0.3",
+        "postcss-value-parser": "^4.1.0"
+      }
+    },
+    "node_modules/@react-pdf/textkit": {
+      "version": "6.0.0",
+      "resolved": "http://npm.repo.lan/@react-pdf/textkit/-/textkit-6.0.0.tgz",
+      "integrity": "sha512-fDt19KWaJRK/n2AaFoVm31hgGmpygmTV7LsHGJNGZkgzXcFyLsx+XUl63DTDPH3iqxj3xUX128t104GtOz8tTw==",
+      "license": "MIT",
+      "dependencies": {
+        "@react-pdf/fns": "3.1.2",
+        "bidi-js": "^1.0.2",
+        "hyphen": "^1.6.4",
+        "unicode-properties": "^1.4.1"
+      }
+    },
+    "node_modules/@react-pdf/types": {
+      "version": "2.9.1",
+      "resolved": "http://npm.repo.lan/@react-pdf/types/-/types-2.9.1.tgz",
+      "integrity": "sha512-5GoCgG0G5NMgpPuHbKG2xcVRQt7+E5pg3IyzVIIozKG3nLcnsXW4zy25vG1ZBQA0jmo39q34au/sOnL/0d1A4w==",
+      "license": "MIT",
+      "dependencies": {
+        "@react-pdf/font": "^4.0.3",
+        "@react-pdf/primitives": "^4.1.1",
+        "@react-pdf/stylesheet": "^6.1.1"
+      }
+    },
     "node_modules/@reactflow/background": {
       "version": "11.3.14",
       "resolved": "https://registry.npmjs.org/@reactflow/background/-/background-11.3.14.tgz",
@@ -2850,6 +3036,15 @@
         "win32"
       ]
     },
+    "node_modules/@swc/helpers": {
+      "version": "0.5.17",
+      "resolved": "http://npm.repo.lan/@swc/helpers/-/helpers-0.5.17.tgz",
+      "integrity": "sha512-5IKx/Y13RsYd+sauPb2x+U/xZikHjolzfuDgTAl/Tdf3Q8rslRvC19NKDLgAJQ6wsqADk10ntlv08nPFw/gO/A==",
+      "license": "Apache-2.0",
+      "dependencies": {
+        "tslib": "^2.8.0"
+      }
+    },
     "node_modules/@tailwindcss/node": {
       "version": "4.1.17",
       "resolved": "https://registry.npmjs.org/@tailwindcss/node/-/node-4.1.17.tgz",
@@ -3932,6 +4127,12 @@
         "zod": "^3.x"
       }
     },
+    "node_modules/abs-svg-path": {
+      "version": "0.1.1",
+      "resolved": "http://npm.repo.lan/abs-svg-path/-/abs-svg-path-0.1.1.tgz",
+      "integrity": "sha512-d8XPSGjfyzlXC3Xx891DJRyZfqk5JU0BJrDQcsWomFIV1/BIzPW5HDH5iDdWpqWaav0YVIEzT1RHTwWr0FFshA==",
+      "license": "MIT"
+    },
     "node_modules/acorn": {
       "version": "8.15.0",
       "resolved": "https://registry.npmjs.org/acorn/-/acorn-8.15.0.tgz",
@@ -4079,6 +4280,26 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/base64-js": {
+      "version": "1.5.1",
+      "resolved": "http://npm.repo.lan/base64-js/-/base64-js-1.5.1.tgz",
+      "integrity": "sha512-AKpaYlHn8t4SVbOHCy+b5+KKgvR4vrsD8vbvrbiQJps7fKDTkjkDry6ji0rUJjC0kzbNePLwzxq8iypo41qeWA==",
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/feross"
+        },
+        {
+          "type": "patreon",
+          "url": "https://www.patreon.com/feross"
+        },
+        {
+          "type": "consulting",
+          "url": "https://feross.org/support"
+        }
+      ],
+      "license": "MIT"
+    },
     "node_modules/baseline-browser-mapping": {
       "version": "2.8.30",
       "resolved": "https://registry.npmjs.org/baseline-browser-mapping/-/baseline-browser-mapping-2.8.30.tgz",
@@ -4089,6 +4310,15 @@
         "baseline-browser-mapping": "dist/cli.js"
       }
     },
+    "node_modules/bidi-js": {
+      "version": "1.0.3",
+      "resolved": "http://npm.repo.lan/bidi-js/-/bidi-js-1.0.3.tgz",
+      "integrity": "sha512-RKshQI1R3YQ+n9YJz2QQ147P66ELpa1FQEg20Dk8oW9t2KgLbpDLLp9aGZ7y8WHSshDknG0bknqGw5/tyCs5tw==",
+      "license": "MIT",
+      "dependencies": {
+        "require-from-string": "^2.0.2"
+      }
+    },
     "node_modules/brace-expansion": {
       "version": "1.1.12",
       "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.12.tgz",
@@ -4113,6 +4343,24 @@
         "node": ">=8"
       }
     },
+    "node_modules/brotli": {
+      "version": "1.3.3",
+      "resolved": "http://npm.repo.lan/brotli/-/brotli-1.3.3.tgz",
+      "integrity": "sha512-oTKjJdShmDuGW94SyyaoQvAjf30dZaHnjJ8uAF+u2/vGJkJbJPJAT1gDiOJP5v1Zb6f9KEyW/1HpuaWIXtGHPg==",
+      "license": "MIT",
+      "dependencies": {
+        "base64-js": "^1.1.2"
+      }
+    },
+    "node_modules/browserify-zlib": {
+      "version": "0.2.0",
+      "resolved": "http://npm.repo.lan/browserify-zlib/-/browserify-zlib-0.2.0.tgz",
+      "integrity": "sha512-Z942RysHXmJrhqk88FmKBVq/v5tqmSkDz7p54G/MGyjMnCFFnC79XWNbg+Vta8W6Wb2qtSZTSxIGkJrRpCFEiA==",
+      "license": "MIT",
+      "dependencies": {
+        "pako": "~1.0.5"
+      }
+    },
     "node_modules/browserslist": {
       "version": "4.28.0",
       "resolved": "https://registry.npmjs.org/browserslist/-/browserslist-4.28.0.tgz",
@@ -4147,6 +4395,30 @@
         "node": "^6 || ^7 || ^8 || ^9 || ^10 || ^11 || ^12 || >=13.7"
       }
     },
+    "node_modules/buffer": {
+      "version": "6.0.3",
+      "resolved": "http://npm.repo.lan/buffer/-/buffer-6.0.3.tgz",
+      "integrity": "sha512-FTiCpNxtwiZZHEZbcbTIcZjERVICn9yq/pDFkTl95/AxzD1naBctN7YO68riM/gLSDY7sdrMby8hofADYuuqOA==",
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/feross"
+        },
+        {
+          "type": "patreon",
+          "url": "https://www.patreon.com/feross"
+        },
+        {
+          "type": "consulting",
+          "url": "https://feross.org/support"
+        }
+      ],
+      "license": "MIT",
+      "dependencies": {
+        "base64-js": "^1.3.1",
+        "ieee754": "^1.2.1"
+      }
+    },
     "node_modules/cac": {
       "version": "6.7.14",
       "resolved": "https://registry.npmjs.org/cac/-/cac-6.7.14.tgz",
@@ -4293,6 +4565,15 @@
       "integrity": "sha512-JhZUT7JFcQy/EzW605k/ktHtncoo9vnyW/2GspNYwFlN1C/WmjuV/xtS04e9SOkL2sTdw0VAZ2UGCcQ9lR6p6w==",
       "license": "MIT"
     },
+    "node_modules/clone": {
+      "version": "2.1.2",
+      "resolved": "http://npm.repo.lan/clone/-/clone-2.1.2.tgz",
+      "integrity": "sha512-3Pe/CF1Nn94hyhIYpjtiLhdCoEoz0DqQ+988E9gmeEdQZlojxnOb74wctFyuwWQHzqyf9X7C7MG8juUpqBJT8w==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=0.8"
+      }
+    },
     "node_modules/clsx": {
       "version": "2.1.1",
       "resolved": "https://registry.npmjs.org/clsx/-/clsx-2.1.1.tgz",
@@ -4335,9 +4616,18 @@
       "version": "1.1.4",
       "resolved": "https://registry.npmjs.org/color-name/-/color-name-1.1.4.tgz",
       "integrity": "sha512-dOy+3AuW3a2wNbZHIuMZpTcgjGuLU/uBL/ubcZF9OXbDo8ff4O8yVp5Bf0efS8uEoYo5q4Fx7dY9OgQGXgAsQA==",
-      "dev": true,
       "license": "MIT"
     },
+    "node_modules/color-string": {
+      "version": "1.9.1",
+      "resolved": "http://npm.repo.lan/color-string/-/color-string-1.9.1.tgz",
+      "integrity": "sha512-shrVawQFojnZv6xM40anx4CkoDP+fZsw/ZerEMsW/pyzsRbElpsL/DBVW7q3ExxwusdNXI3lXpuhEZkzs8p5Eg==",
+      "license": "MIT",
+      "dependencies": {
+        "color-name": "^1.0.0",
+        "simple-swizzle": "^0.2.2"
+      }
+    },
     "node_modules/combined-stream": {
       "version": "1.0.8",
       "resolved": "https://registry.npmjs.org/combined-stream/-/combined-stream-1.0.8.tgz",
@@ -4398,6 +4688,12 @@
         "node": ">= 8"
       }
     },
+    "node_modules/crypto-js": {
+      "version": "4.2.0",
+      "resolved": "http://npm.repo.lan/crypto-js/-/crypto-js-4.2.0.tgz",
+      "integrity": "sha512-KALDyEYgpY+Rlob/iriUtjV6d5Eq+Y191A5g4UqLAi8CyGP9N1+FdVbkc1SxKc2r4YAYqG8JzO2KGL+AizD70Q==",
+      "license": "MIT"
+    },
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+      "version": "1.3.0",
+      "resolved": "http://npm.repo.lan/string_decoder/-/string_decoder-1.3.0.tgz",
+      "integrity": "sha512-hkRX8U1WjJFd8LsDJ2yQ/wWWxaopEsABU1XfkM8A+j0+85JAGppt16cr1Whg6KIbb4okU6Mql6BOj+uup/wKeA==",
+      "license": "MIT",
+      "dependencies": {
+        "safe-buffer": "~5.2.0"
+      }
+    },
     "node_modules/stringify-entities": {
       "version": "4.0.4",
       "resolved": "https://registry.npmjs.org/stringify-entities/-/stringify-entities-4.0.4.tgz",
@@ -7820,6 +8361,12 @@
         "node": ">=8"
       }
     },
+    "node_modules/svg-arc-to-cubic-bezier": {
+      "version": "3.2.0",
+      "resolved": "http://npm.repo.lan/svg-arc-to-cubic-bezier/-/svg-arc-to-cubic-bezier-3.2.0.tgz",
+      "integrity": "sha512-djbJ/vZKZO+gPoSDThGNpKDO+o+bAeA4XQKovvkNCqnIS2t+S4qnLAGQhyyrulhCFRl1WWzAp0wUDV8PpTVU3g==",
+      "license": "ISC"
+    },
     "node_modules/tailwind-merge": {
       "version": "3.4.0",
       "resolved": "https://registry.npmjs.org/tailwind-merge/-/tailwind-merge-3.4.0.tgz",
@@ -7894,6 +8441,12 @@
         "url": "https://opencollective.com/webpack"
       }
     },
+    "node_modules/tiny-inflate": {
+      "version": "1.0.3",
+      "resolved": "http://npm.repo.lan/tiny-inflate/-/tiny-inflate-1.0.3.tgz",
+      "integrity": "sha512-pkY1fj1cKHb2seWDy0B16HeWyczlJA9/WW3u3c4z/NiWDsO3DOU5D7nhTLE9CF0yXv/QZFY7sEJmj24dK+Rrqw==",
+      "license": "MIT"
+    },
     "node_modules/tinyglobby": {
       "version": "0.2.15",
       "resolved": "https://registry.npmjs.org/tinyglobby/-/tinyglobby-0.2.15.tgz",
@@ -8093,6 +8646,32 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/unicode-properties": {
+      "version": "1.4.1",
+      "resolved": "http://npm.repo.lan/unicode-properties/-/unicode-properties-1.4.1.tgz",
+      "integrity": "sha512-CLjCCLQ6UuMxWnbIylkisbRj31qxHPAurvena/0iwSVbQ2G1VY5/HjV0IRabOEbDHlzZlRdCrD4NhB0JtU40Pg==",
+      "license": "MIT",
+      "dependencies": {
+        "base64-js": "^1.3.0",
+        "unicode-trie": "^2.0.0"
+      }
+    },
+    "node_modules/unicode-trie": {
+      "version": "2.0.0",
+      "resolved": "http://npm.repo.lan/unicode-trie/-/unicode-trie-2.0.0.tgz",
+      "integrity": "sha512-x7bc76x0bm4prf1VLg79uhAzKw8DVboClSN5VxJuQ+LKDOVEW9CdH+VY7SP+vX7xCYQqzzgQpFqz15zeLvAtZQ==",
+      "license": "MIT",
+      "dependencies": {
+        "pako": "^0.2.5",
+        "tiny-inflate": "^1.0.0"
+      }
+    },
+    "node_modules/unicode-trie/node_modules/pako": {
+      "version": "0.2.9",
+      "resolved": "http://npm.repo.lan/pako/-/pako-0.2.9.tgz",
+      "integrity": "sha512-NUcwaKxUxWrZLpDG+z/xZaCgQITkA/Dv4V/T6bw7VON6l1Xz/VnrBqrYjZQ12TamKHzITTfOEIYUj48y2KXImA==",
+      "license": "MIT"
+    },
     "node_modules/unified": {
       "version": "11.0.5",
       "resolved": "https://registry.npmjs.org/unified/-/unified-11.0.5.tgz",
@@ -8287,7 +8866,6 @@
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/util-deprecate/-/util-deprecate-1.0.2.tgz",
       "integrity": "sha512-EPD5q1uXyFxJpCrLnCc1nHnq3gOa6DZBocAIiI2TaSCA7VCJ1UJDMagCzIkXNsUYfD1daK//LTEQ8xiIbrHtcw==",
-      "dev": true,
       "license": "MIT"
     },
     "node_modules/vfile": {
@@ -8393,6 +8971,20 @@
         }
       }
     },
+    "node_modules/vite-compatible-readable-stream": {
+      "version": "3.6.1",
+      "resolved": "http://npm.repo.lan/vite-compatible-readable-stream/-/vite-compatible-readable-stream-3.6.1.tgz",
+      "integrity": "sha512-t20zYkrSf868+j/p31cRIGN28Phrjm3nRSLR2fyc2tiWi4cZGVdv68yNlwnIINTkMTmPoMiSlc0OadaO7DXZaQ==",
+      "license": "MIT",
+      "dependencies": {
+        "inherits": "^2.0.3",
+        "string_decoder": "^1.1.1",
+        "util-deprecate": "^1.0.1"
+      },
+      "engines": {
+        "node": ">= 6"
+      }
+    },
     "node_modules/vite/node_modules/fdir": {
       "version": "6.5.0",
       "resolved": "https://registry.npmjs.org/fdir/-/fdir-6.5.0.tgz",
@@ -8510,6 +9102,12 @@
         "url": "https://github.com/sponsors/sindresorhus"
       }
     },
+    "node_modules/yoga-layout": {
+      "version": "3.2.1",
+      "resolved": "http://npm.repo.lan/yoga-layout/-/yoga-layout-3.2.1.tgz",
+      "integrity": "sha512-0LPOt3AxKqMdFBZA3HBAt/t/8vIKq7VaQYbuA8WxCgung+p9TVyKRYdpvCb80HcdTN2NkbIKbhNwKUfm3tQywQ==",
+      "license": "MIT"
+    },
     "node_modules/zod": {
       "version": "3.25.76",
       "resolved": "http://npm.repo.lan/zod/-/zod-3.25.76.tgz",

frontend/package.json

@@ -22,14 +22,17 @@
     "@radix-ui/react-slot": "^1.2.4",
     "@radix-ui/react-tabs": "^1.1.13",
     "@radix-ui/react-tooltip": "^1.2.8",
+    "@react-pdf/renderer": "^4.3.1",
     "@tanstack/react-query": "^5.90.10",
     "@zodios/core": "^10.9.6",
     "axios": "^1.13.2",
+    "buffer": "^6.0.3",
     "class-variance-authority": "^0.7.1",
     "clsx": "^2.1.1",
     "cmdk": "^1.1.1",
     "date-fns": "^4.1.0",
     "elkjs": "^0.11.0",
+    "html-to-image": "^1.11.13",
     "lucide-react": "^0.554.0",
     "react": "^19.2.0",
     "react-dom": "^19.2.0",

frontend/public/user-guide.md

@@ -1,11 +1,11 @@
-# Fundamental Analysis Platform 用户指南 (v2.0 - Vite Refactor)
+# Fundamental Analysis Platform 用户指南 (v2.1 - Dynamic Refactor)
-日期: 2025-11-22
+日期: 2025-11-30
-版本: 2.0
+版本: 2.1
 
 ## 1. 简介
 Fundamental Analysis Platform 是一个基于 AI Agent 的深度基本面投研平台，旨在通过自动化工作流聚合多源金融数据，并利用 LLM（大语言模型）生成专业的财务分析报告。
 
-v2.0 版本采用了全新的 Vite + React SPA 架构，提供了更流畅的交互体验和实时的分析状态可视化。
+v2.1 版本引入了动态配置架构、增强的实时日志流和结构化的数据报表展示，提供了更稳定和可视化的分析体验。
 
 ## 2. 核心功能
 
@@ -16,47 +16,57 @@ v2.0 版本采用了全新的 Vite + React SPA 架构，提供了更流畅的交
 *   **开始分析**: 点击“生成分析报告”按钮即可启动分析流程。
 
 ### 2.2 分析报告页 (Report View)
-核心工作区，分为左侧状态栏和右侧详情区。
+核心工作区，采用**双栏布局**：左侧为实时状态监控，右侧为多标签页详情展示。
 
-#### 左侧：工作流状态
+#### 左侧：工作流状态 (Workflow Status)
-*   **可视化 DAG**: 展示当前的分析任务依赖图。
+*   **可视化 DAG (Visualizer)**: 
+    *   展示当前的分析任务依赖图。节点显示**人类可读的任务名称** (如 "新闻分析", "财务数据获取")。
     *   **节点颜色**: 灰色(等待)、蓝色(运行中)、绿色(完成)、红色(失败)。
-    *   **动态连线**: 当任务运行时，连接线会有流光动画指示数据流向。
+    *   **动态连线**: 任务运行时显示流光动画，指示数据流向。
-*   **实时日志**: 滚动展示所有后台任务的执行日志，支持实时查看数据抓取和分析进度。
+*   **实时日志 (Real-time Logs)**: 
+    *   位于左侧底部（或独立面板），实时滚动展示所有后台任务的执行日志。
+    *   **历史回放**: 即使刷新页面或断线重连，系统也会自动拉取完整的历史日志，确保信息不丢失。
 
-#### 右侧：详情面板
+#### 右侧：详情面板 (Detail Tabs)
-*   **Analysis Report**: 展示由 AI 生成的最终分析报告。支持 Markdown 格式（标题、表格、加粗、引用），并带有打字机生成特效。
+右侧区域根据分析流程动态生成多个标签页：
-*   **Fundamental Data**: (开发中) 展示抓取到的原始财务数据表格。
+
-*   **Stock Chart**: (开发中) 展示股价走势图。
+*   **Overview (总览)**: 
+    *   展示整体分析进度、任务完成统计和总耗时。
+    *   如果任务失败，会在此处显示具体的错误信息摘要。
+*   **任务详情页 (Task Tabs)**: 
+    *   每个工作流节点（如 "Financial Data", "News Analysis"）都有独立的标签页。
+    *   **智能渲染**: 
+        *   **分析报告**: AI 生成的文本以 Markdown 格式渲染，支持富文本排版。
+        *   **财务数据**: 原始财务数据（特别是 Tushare A股数据）现在自动转换为**结构化 Markdown 表格**，按年份和报表类型分组，数值经过格式化（如 "14.20 亿"），便于阅读。
+    *   **Inspector (调试器)**: 点击右上角的 "Inspector" 按钮，可以打开侧边栏，查看该任务的输入/输出文件差异 (Diff) 和上下文信息，方便调试。
 
 ### 2.3 系统配置 (Config)
 集中管理平台的所有外部连接和参数。
 
 *   **AI Provider**:
     *   管理 LLM 供应商 (OpenAI, Anthropic, Local Ollama 等)。
-    *   配置 API Key 和 Base URL。
+    *   支持配置 API Key、Base URL 和模型选择。
-    *   刷新并选择可用的模型 (GPT-4o, Claude-3.5 等)。
+*   **数据源配置 (Dynamic Data Sources)**:
-*   **数据源配置**:
+    *   **动态加载**: 支持的数据源列表（Tushare, Finnhub, AlphaVantage 等）及其配置项由后端动态下发，无需升级前端即可支持新数据源。
-    *   启用/禁用金融数据源 (Tushare, Finnhub, AlphaVantage)。
+    *   **功能**: 支持输入 Token/Key，并提供 **"Test Connection" (测试连接)** 按钮以验证配置是否有效。
-    *   输入对应的 API Token。
-    *   支持连接测试。
 *   **分析模板**:
-    *   查看当前的分析流程模板（如 "Quick Scan"）。
+    *   查看当前的分析流程模板及各模块使用的 Prompt。
-    *   查看每个模块使用的 Prompt 模板及模型配置。
 *   **系统状态**:
     *   监控微服务集群 (API Gateway, Orchestrator 等) 的健康状态。
 
 ## 3. 快速开始
 
 1.  进入 **配置页** -> **AI Provider**，添加您的 OpenAI API Key。
-2.  进入 **配置页** -> **数据源配置**，启用 Tushare 并输入 Token。
+2.  进入 **配置页** -> **数据源配置**，选择 **Tushare** (或其他源)，输入 Token 并点击 **Test Connection** 确认连通性，最后保存。
 3.  回到 **首页**，输入 `600519.SS`，选择 `CN` 市场。
-4.  点击 **生成分析报告**，观察工作流运行及报告生成。
+4.  点击 **生成分析报告**。
+5.  在报告页观察左侧 DAG 运行状态，随着任务完成，点击右侧对应的标签页查看数据和分析结果。
 
 ## 4. 常见问题
 
 *   **Q: 报告生成卡住怎么办？**
-    *   A: 检查左侧“实时日志”，查看是否有 API 连接超时或配额耗尽的错误。
+    *   A: 检查左侧“实时日志”，查看是否有 API 连接超时或配额耗尽的错误。也可以在 "Overview" 标签页查看是否有任务标记为失败。
 *   **Q: 如何添加本地模型？**
     *   A: 在 AI Provider 页添加新的 Provider，Base URL 填入 `http://localhost:11434/v1` (Ollama 默认地址)。
-
+*   **Q: 为什么看不到某些数据源？**
+    *   A: 数据源列表由后端服务动态注册。请确保对应的 Provider 微服务（如 `tushare-provider-service`）已正常启动并注册到网关。

frontend/src/components/RecentReportsDropdown.tsx

@@ -13,6 +13,7 @@ import { History, Loader2 } from 'lucide-react';
 import { WorkflowHistorySummaryDto } from '@/api/schema.gen';
 import { z } from 'zod';
 import { client } from '@/api/client';
+import { useAnalysisTemplates } from "@/hooks/useConfig";
 
 type WorkflowHistorySummary = z.infer<typeof WorkflowHistorySummaryDto>;
 
@@ -20,6 +21,7 @@ export function RecentReportsDropdown() {
     const [reports, setReports] = useState<WorkflowHistorySummary[]>([]);
     const [loading, setLoading] = useState(false);
     const navigate = useNavigate();
+    const { data: templates } = useAnalysisTemplates();
 
     const loadReports = async () => {
         setLoading(true);
@@ -64,7 +66,7 @@ export function RecentReportsDropdown() {
                                 <span className="text-xs font-normal text-muted-foreground">{new Date(report.start_time).toLocaleDateString()}</span>
                             </div>
                             <div className="flex justify-between w-full text-xs text-muted-foreground">
-                                <span>{report.template_id || 'Default'}</span>
+                                <span>{templates?.find(t => t.id === report.template_id)?.name || report.template_id || 'Default'}</span>
                                 <span className={report.status === 'Completed' ? 'text-green-600' : report.status === 'Failed' ? 'text-destructive' : 'text-amber-600'}>{report.status}</span>
                             </div>
                         </DropdownMenuItem>

frontend/src/components/RecentWorkflowsList.tsx

@@ -4,10 +4,11 @@ import { Card, CardContent, CardHeader, CardTitle, CardDescription } from "@/com
 import { Table, TableBody, TableCell, TableHead, TableHeader, TableRow } from "@/components/ui/table";
 import { Badge } from "@/components/ui/badge";
 import { Button } from "@/components/ui/button";
-import { Loader2, ArrowRight, History, RefreshCw } from "lucide-react";
+import { Loader2, ArrowRight, History, RefreshCw, Trash2 } from "lucide-react";
 import { WorkflowHistorySummaryDto } from '@/api/schema.gen';
 import { z } from 'zod';
 import { client } from '@/api/client';
+import { useAnalysisTemplates } from "@/hooks/useConfig";
 
 type WorkflowHistorySummary = z.infer<typeof WorkflowHistorySummaryDto>;
 
@@ -15,6 +16,7 @@ export function RecentWorkflowsList() {
     const [history, setHistory] = useState<WorkflowHistorySummary[]>([]);
     const [loading, setLoading] = useState(false);
     const navigate = useNavigate();
+    const { data: templates } = useAnalysisTemplates();
 
     const fetchHistory = async () => {
         setLoading(true);
@@ -29,6 +31,23 @@ export function RecentWorkflowsList() {
         }
     };
 
+    const handleClearHistory = async () => {
+        if (confirm("Are you sure you want to clear ALL history? This cannot be undone.")) {
+            try {
+                const res = await fetch('/api/v1/system/history', { method: 'DELETE' });
+                if (res.ok) {
+                    fetchHistory();
+                } else {
+                    console.error("Failed to clear history");
+                    alert("Failed to clear history");
+                }
+            } catch (e) {
+                console.error(e);
+                alert("Error clearing history");
+            }
+        }
+    };
+
     useEffect(() => {
         fetchHistory();
     }, []);
@@ -49,9 +68,14 @@ export function RecentWorkflowsList() {
                         Your recently generated fundamental analysis reports.
                     </CardDescription>
                 </div>
-                <Button variant="ghost" size="icon" onClick={fetchHistory} disabled={loading}>
+                <div className="flex gap-2">
-                    <RefreshCw className={`h-4 w-4 ${loading ? 'animate-spin' : ''}`} />
+                    <Button variant="ghost" size="icon" onClick={handleClearHistory} title="Clear All History">
-                </Button>
+                        <Trash2 className="h-4 w-4 text-muted-foreground hover:text-destructive" />
+                    </Button>
+                    <Button variant="ghost" size="icon" onClick={fetchHistory} disabled={loading}>
+                        <RefreshCw className={`h-4 w-4 ${loading ? 'animate-spin' : ''}`} />
+                    </Button>
+                </div>
             </CardHeader>
             <CardContent>
                 <Table>
@@ -77,7 +101,7 @@ export function RecentWorkflowsList() {
                                 <TableRow key={item.request_id} className="group cursor-pointer hover:bg-muted/50" onClick={() => navigate(`/history/${item.request_id}`)}>
                                     <TableCell className="font-medium">{item.symbol}</TableCell>
                                     <TableCell>{item.market}</TableCell>
-                                    <TableCell className="text-muted-foreground">{item.template_id || 'Default'}</TableCell>
+                                    <TableCell className="text-muted-foreground">{templates?.find(t => t.id === item.template_id)?.name || item.template_id || 'Default'}</TableCell>
                                     <TableCell>
                                         <StatusBadge status={item.status} />
                                     </TableCell>

frontend/src/components/report/PDFExportButton.tsx

@@ -0,0 +1,326 @@
+import { useState } from 'react';
+import * as htmlToImage from 'html-to-image';
+import { Button } from '@/components/ui/button';
+import { Loader2, FileDown } from 'lucide-react';
+import { useWorkflowStore } from '@/stores/useWorkflowStore';
+import { cn, formatNodeName } from '@/lib/utils';
+import { cropImage } from '@/lib/image-processing';
+import { schemas } from '@/api/schema.gen';
+import { marked } from 'marked';
+
+interface PDFExportButtonProps {
+    symbol?: string | null;
+    market?: string | null;
+    templateName?: string | null;
+    requestId?: string;
+    className?: string;
+}
+
+export function PDFExportButton({ symbol, market, templateName, requestId, className }: PDFExportButtonProps) {
+    // State to track PDF generation process
+    const [isGenerating, setIsGenerating] = useState(false);
+    const { tasks, dag } = useWorkflowStore();
+    
+    // const apiBaseUrl = (import.meta as any).env.VITE_API_TARGET || '/v1';
+
+    const generateHTML = async (graphImage: string) => {
+        // CSS Styles (GitHub Markdown + Tailwind-like base styles)
+        const styles = `
+            <style>
+                @page {
+                    margin: 0 2%;
+                }
+                body {
+                    font-family: "ChineseFont", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
+                    line-height: 1.6;
+                    color: #24292f;
+                    max-width: 900px;
+                    margin: 0 auto;
+                    padding: 40px;
+                    background-color: #ffffff;
+                }
+                h1, h2, h3, h4, h5, h6 {
+                    margin-top: 24px;
+                    margin-bottom: 16px;
+                    font-weight: 600;
+                    line-height: 1.25;
+                }
+                h1 { font-size: 2em; border-bottom: 1px solid #eaecef; padding-bottom: .3em; }
+                h2 { font-size: 1.5em; border-bottom: 1px solid #eaecef; padding-bottom: .3em; }
+                h3 { font-size: 1.25em; }
+                p { margin-top: 0; margin-bottom: 16px; text-align: justify; }
+                code {
+                    padding: .2em .4em;
+                    margin: 0;
+                    font-size: 85%;
+                    background-color: rgba(27,31,35,.05);
+                    border-radius: 3px;
+                    font-family: SFMono-Regular,Consolas,Liberation Mono,Menlo,monospace;
+                }
+                pre {
+                    padding: 16px;
+                    overflow: auto;
+                    font-size: 85%;
+                    line-height: 1.45;
+                    background-color: #f6f8fa;
+                    border-radius: 3px;
+                    margin-bottom: 16px;
+                }
+                pre code {
+                    display: inline;
+                    padding: 0;
+                    margin: 0;
+                    overflow: visible;
+                    line-height: inherit;
+                    word-wrap: normal;
+                    background-color: transparent;
+                    border: 0;
+                }
+                blockquote {
+                    padding: 0 1em;
+                    color: #6a737d;
+                    border-left: .25em solid #dfe2e5;
+                    margin: 0 0 16px 0;
+                }
+                ul, ol { padding-left: 2em; margin-bottom: 16px; }
+                li { margin-bottom: 4px; }
+                img { max-width: 100%; box-sizing: content-box; background-color: #fff; }
+                table {
+                    display: block;
+                    width: 100%;
+                    overflow: auto;
+                    margin-bottom: 16px;
+                    border-spacing: 0;
+                    border-collapse: collapse;
+                }
+                table tr {
+                    background-color: #fff;
+                    border-top: 1px solid #c6cbd1;
+                }
+                table tr:nth-child(2n) {
+                    background-color: #f6f8fa;
+                }
+                table th, table td {
+                    padding: 6px 13px;
+                    border: 1px solid #dfe2e5;
+                }
+                table th {
+                    font-weight: 600;
+                }
+                hr {
+                    height: .25em;
+                    padding: 0;
+                    margin: 24px 0;
+                    background-color: #e1e4e8;
+                    border: 0;
+                }
+                
+                /* Report Specific Styles */
+                .report-header {
+                    margin-bottom: 40px;
+                    border-bottom: 2px solid #eaecef;
+                    padding-bottom: 20px;
+                    display: flex;
+                    justify-content: space-between;
+                    align-items: flex-end;
+                }
+                .report-title {
+                    font-size: 2.5em;
+                    font-weight: bold;
+                    margin: 0;
+                    line-height: 1.2;
+                }
+                .report-meta {
+                    text-align: right;
+                    color: #586069;
+                    font-size: 0.9em;
+                }
+                .section-title {
+                    background-color: #f6f8fa;
+                    padding: 10px 15px;
+                    border-left: 5px solid #0366d6;
+                    margin-top: 30px;
+                    margin-bottom: 20px;
+                    font-size: 1.5em;
+                    font-weight: bold;
+                }
+                .workflow-graph {
+                    margin: 30px 0;
+                    text-align: center;
+                    border: 1px solid #eaecef;
+                    padding: 10px;
+                    border-radius: 6px;
+                }
+                .workflow-graph img {
+                    max-width: 100%;
+                    max-height: 800px;
+                    object-fit: contain;
+                    margin: 0 auto;
+                    display: block;
+                }
+                .footer {
+                    margin-top: 50px;
+                    padding-top: 20px;
+                    border-top: 1px solid #eaecef;
+                    text-align: center;
+                    color: #586069;
+                    font-size: 0.8em;
+                }
+                /* Printing Optimization */
+                @media print {
+                    body { max-width: 100%; padding: 0; }
+                    .section-title { break-after: avoid; }
+                    pre, blockquote, table { break-inside: avoid; }
+                    img { max-width: 100% !important; }
+                    /* Ensure background colors are printed */
+                    * { -webkit-print-color-adjust: exact; print-color-adjust: exact; }
+                }
+            </style>
+        `;
+
+        // Generate Tasks HTML
+        let tasksHtml = '';
+        if (dag?.nodes) {
+            for (const node of dag.nodes) {
+                const task = tasks[node.id];
+                if (task && task.status === schemas.TaskStatus.enum.Completed && task.content) {
+                    const parsedContent = await marked.parse(task.content);
+                    tasksHtml += `
+                        <div class="section">
+                            <div class="section-title">${node.display_name || formatNodeName(node.name)}</div>
+                            <div class="markdown-body">
+                                ${parsedContent}
+                            </div>
+                        </div>
+                    `;
+                }
+            }
+        }
+
+        // Assemble Full HTML
+        return `
+            <!DOCTYPE html>
+            <html lang="en">
+            <head>
+                <meta charset="UTF-8">
+                <meta name="viewport" content="width=device-width, initial-scale=1.0">
+                <title>${symbol} - Analysis Report</title>
+                ${styles}
+            </head>
+            <body>
+                <div class="report-header">
+                    <div>
+                        <div class="report-title">${symbol || 'Unknown Symbol'}</div>
+                        <div style="font-size: 1.2em; color: #586069;">${market || 'Unknown Market'}</div>
+                    </div>
+                    <div class="report-meta">
+                        <div>Template: ${templateName || 'Default'}</div>
+                        <div>ID: ${requestId || 'N/A'}</div>
+                        <div>Date: ${new Date().toLocaleDateString()}</div>
+                    </div>
+                </div>
+
+                ${graphImage ? `
+                <div class="section">
+                    <div class="section-title">Workflow Topology</div>
+                    <div class="workflow-graph">
+                        <img src="${graphImage}" alt="Workflow Graph" />
+                    </div>
+                </div>
+                ` : ''}
+
+                ${tasksHtml}
+
+                <div class="footer">
+                    Generated by Fundamental Analysis Platform • ${new Date().toISOString()}
+                </div>
+            </body>
+            </html>
+        `;
+    };
+
+    const handleExport = async () => {
+        setIsGenerating(true);
+        
+        try {
+            // 1. Capture the Graph Image
+            const flowElement = document.querySelector('.react-flow') as HTMLElement;
+            let graphImage = '';
+            
+            if (flowElement) {
+                try {
+                    const filter = (node: HTMLElement) => {
+                        const exclusionClasses = ['react-flow__controls', 'react-flow__minimap', 'react-flow__panel', 'react-flow__background'];
+                        return !exclusionClasses.some(classname => node.classList?.contains(classname));
+                    };
+                    
+                    // Wait for animations
+                    await new Promise(resolve => setTimeout(resolve, 100));
+                    
+                    graphImage = await htmlToImage.toPng(flowElement, {
+                        filter,
+                        backgroundColor: '#ffffff',
+                        pixelRatio: 2,
+                        cacheBust: true,
+                    });
+
+                    // Auto-crop whitespace
+                    graphImage = await cropImage(graphImage);
+                } catch (e) {
+                    console.warn("Graph capture failed:", e);
+                }
+            }
+
+            // 2. Generate HTML Content
+            const htmlContent = await generateHTML(graphImage);
+
+            // 3. Send to Backend for PDF Conversion
+            const formData = new FormData();
+            const blob = new Blob([htmlContent], { type: 'text/html' });
+            formData.append('index.html', blob, 'index.html');
+
+            // Send to /api/v1/generate-pdf which is proxied by Vite to API Gateway
+            // The API Gateway then forwards it to the Report Service
+            const response = await fetch(`/api/v1/generate-pdf`, {
+                method: 'POST',
+                body: formData,
+            });
+
+            if (!response.ok) {
+                throw new Error(`PDF generation failed: ${response.statusText}`);
+            }
+
+            // 4. Download PDF
+            const pdfBlob = await response.blob();
+            const url = URL.createObjectURL(pdfBlob);
+            const link = document.createElement('a');
+            link.href = url;
+            link.download = `${symbol || 'Report'}_${market || 'Analysis'}.pdf`;
+            document.body.appendChild(link);
+            link.click();
+            document.body.removeChild(link);
+            URL.revokeObjectURL(url);
+
+        } catch (e) {
+            console.error("Export failed", e);
+            alert("Failed to generate PDF. Please try again.");
+        } finally {
+            setIsGenerating(false);
+        }
+    };
+
+    return (
+        <div className="flex gap-2">
+            <Button 
+                size="sm" 
+                variant="outline" 
+                className={cn("gap-2", className)} 
+                onClick={handleExport}
+                disabled={isGenerating}
+            >
+                {isGenerating ? <Loader2 className="h-4 w-4 animate-spin" /> : <FileDown className="h-4 w-4" />}
+                {isGenerating ? "Generating PDF..." : "Export PDF"}
+            </Button>
+        </div>
+    );
+}

frontend/src/index.css

@@ -38,6 +38,43 @@
   }
 }
 
+/* 
+  Markdown Typography Overrides 
+  Ensure high contrast for all text elements within prose content.
+*/
+@layer components {
+  .prose {
+    /* Force base text color */
+    @apply text-foreground;
+
+    /* Force specific elements to use foreground color to avoid "faint" gray defaults */
+    & :where(p, ul, ol, li, blockquote, strong, b, i, em, code, h1, h2, h3, h4, h5, h6, th, td, span) {
+        color: var(--color-foreground) !important;
+    }
+
+    /* Ensure links use primary color */
+    & a {
+        @apply text-primary hover:underline decoration-primary/30 underline-offset-4;
+        color: var(--color-primary) !important;
+    }
+
+    /* Table styling fixes */
+    & :where(thead, tbody, tr) {
+        border-color: var(--color-border) !important;
+    }
+    & :where(th, td) {
+        border-color: var(--color-border) !important;
+    }
+    
+    /* Code block fixes */
+    & pre {
+        @apply bg-muted text-foreground;
+        border-color: var(--color-border) !important;
+        border-width: 1px !important;
+    }
+  }
+}
+
 .writing-vertical-lr {
   writing-mode: vertical-lr;
 }

frontend/src/lib/image-processing.ts

@@ -0,0 +1,164 @@
+
+/**
+ * Process image data to crop whitespace
+ */
+export async function cropImage(
+  imageSrc: string, 
+  options: {
+    threshold?: number; // 0-255, higher means more colors are considered "white"
+    padding?: number; // padding in pixels to keep around content
+  } = {}
+): Promise<string> {
+  const { threshold = 252, padding = 20 } = options; // 252 covers pure white and very light compression artifacts
+
+  return new Promise((resolve, reject) => {
+    const img = new Image();
+    // Enable CORS if needed, though usually data URLs don't need it
+    img.crossOrigin = "anonymous"; 
+    
+    img.onload = () => {
+      try {
+        const canvas = document.createElement('canvas');
+        canvas.width = img.width;
+        canvas.height = img.height;
+        const ctx = canvas.getContext('2d');
+        
+        if (!ctx) {
+          resolve(imageSrc);
+          return;
+        }
+
+        ctx.drawImage(img, 0, 0);
+        const imageData = ctx.getImageData(0, 0, canvas.width, canvas.height);
+        const data = imageData.data;
+        const { width, height } = canvas;
+
+        // Check if pixel is "content" (darker than threshold)
+        // Returns true if it is CONTENT
+        const isContent = (r: number, g: number, b: number) => {
+            return r < threshold || g < threshold || b < threshold;
+        };
+
+        let top = -1, bottom = -1, left = -1, right = -1;
+
+        // Scan Top-down for top boundary
+        for (let y = 0; y < height; y++) {
+            for (let x = 0; x < width; x++) {
+                const idx = (y * width + x) * 4;
+                if (isContent(data[idx], data[idx+1], data[idx+2])) {
+                    top = y;
+                    break;
+                }
+            }
+            if (top !== -1) break;
+        }
+
+        // If top is still -1, the image is empty (all white)
+        if (top === -1) {
+            resolve(imageSrc);
+            return;
+        }
+
+        // Scan Bottom-up for bottom boundary
+        for (let y = height - 1; y >= top; y--) {
+            for (let x = 0; x < width; x++) {
+                const idx = (y * width + x) * 4;
+                if (isContent(data[idx], data[idx+1], data[idx+2])) {
+                    bottom = y + 1;
+                    break;
+                }
+            }
+            if (bottom !== -1) break;
+        }
+
+        // Scan Left-right for left boundary
+        // We only need to scan within the vertical bounds we found
+        for (let x = 0; x < width; x++) {
+            for (let y = top; y < bottom; y++) {
+                const idx = (y * width + x) * 4;
+                if (isContent(data[idx], data[idx+1], data[idx+2])) {
+                    left = x;
+                    break;
+                }
+            }
+            if (left !== -1) break;
+        }
+
+        // Scan Right-left for right boundary
+        for (let x = width - 1; x >= left; x--) {
+            for (let y = top; y < bottom; y++) {
+                const idx = (y * width + x) * 4;
+                if (isContent(data[idx], data[idx+1], data[idx+2])) {
+                    right = x + 1;
+                    break;
+                }
+            }
+            if (right !== -1) break;
+        }
+
+        // Calculate crop coordinates with padding
+        const cropX = Math.max(0, left - padding);
+        const cropY = Math.max(0, top - padding);
+        
+        // Calculate width/height ensuring we don't go out of bounds
+        // right is exclusive index + 1, so width is right - left.
+        // content width = right - left
+        // target width = content width + 2 * padding
+        // but limited by image bounds
+        const contentWidth = right - left;
+        const contentHeight = bottom - top;
+        
+        // Check if we found valid bounds
+        if (contentWidth <= 0 || contentHeight <= 0) {
+            resolve(imageSrc);
+            return;
+        }
+
+        // Adjust padding to not exceed original image
+        // Actually, we want the crop rect to include padding if it exists in source, 
+        // or maybe just white pad if it doesn't?
+        // The current logic `Math.max(0, left - padding)` keeps padding INSIDE the original image.
+        // If the content is at the edge, we might want to ADD whitespace?
+        // Usually cropping means reducing size. Let's stick to keeping what's in the image.
+        
+        const rectRight = Math.min(width, right + padding);
+        const rectBottom = Math.min(height, bottom + padding);
+        
+        const finalWidth = rectRight - cropX;
+        const finalHeight = rectBottom - cropY;
+
+        const finalCanvas = document.createElement('canvas');
+        finalCanvas.width = finalWidth;
+        finalCanvas.height = finalHeight;
+        const finalCtx = finalCanvas.getContext('2d');
+        
+        if (!finalCtx) {
+             resolve(imageSrc);
+             return;
+        }
+
+        // Fill with white in case of transparency (though we are copying from opaque usually)
+        finalCtx.fillStyle = '#ffffff';
+        finalCtx.fillRect(0, 0, finalWidth, finalHeight);
+
+        finalCtx.drawImage(
+            canvas, 
+            cropX, cropY, finalWidth, finalHeight, // Source rect
+            0, 0, finalWidth, finalHeight // Dest rect
+        );
+
+        resolve(finalCanvas.toDataURL('image/png'));
+
+      } catch (e) {
+        console.error("Image processing failed", e);
+        resolve(imageSrc);
+      }
+    };
+    img.onerror = (e) => {
+        console.error("Image loading failed", e);
+        resolve(imageSrc);
+    };
+    img.src = imageSrc;
+  });
+}
+

frontend/src/main.tsx

@@ -1,6 +1,14 @@
 import { StrictMode } from 'react'
 import { createRoot } from 'react-dom/client'
 import { QueryClient, QueryClientProvider } from '@tanstack/react-query'
+import * as buffer from 'buffer';
+
+// Polyfill Buffer for @react-pdf/renderer
+if (typeof window !== 'undefined') {
+  // @ts-ignore
+  window.Buffer = window.Buffer || buffer.Buffer;
+}
+
 import './index.css'
 import App from './App'
 

frontend/src/pages/Dashboard.tsx

@@ -203,7 +203,7 @@ export function Dashboard() {
 
          <div className="grid grid-cols-1 md:grid-cols-3 gap-4 max-w-4xl mx-auto text-left">
              <FeatureCard title="多源数据聚合" desc="集成 Tushare, Finnhub 等多个专业金融数据源。" />
-             <FeatureCard title="AI 驱动分析" desc="使用 GPT-4o 等大模型进行深度财务指标解读。" />
+             <FeatureCard title="AI 驱动分析" desc="配置任意大模型、Prompt和分析流,进行深度财务指标解读。" />
              <FeatureCard title="可视化工作流" desc="全流程透明化，实时查看每个分析步骤的状态。" />
          </div>
       </div>

frontend/src/pages/HistoricalReportPage.tsx

@@ -12,10 +12,10 @@ import { Button } from '@/components/ui/button';
 import ReactMarkdown from 'react-markdown';
 import remarkGfm from 'remark-gfm';
 import { useAnalysisTemplates } from "@/hooks/useConfig"
-import { RecentReportsDropdown } from '@/components/RecentReportsDropdown';
 import { WorkflowStatus, ConnectionStatus, TaskState, TaskNode } from '@/types/workflow';
 import { Progress } from "@/components/ui/progress"
 import { cn, formatNodeName } from '@/lib/utils';
+import { PDFExportButton } from '@/components/report/PDFExportButton';
 
 export function HistoricalReportPage() {
   const { id } = useParams();
@@ -46,7 +46,7 @@ export function HistoricalReportPage() {
   } = useWorkflowStore();
 
   const { data: templates } = useAnalysisTemplates();
-  const templateName = templates && templateId ? templates[templateId]?.name : templateId;
+  const templateName = templates?.find(t => t.id === templateId)?.name || templateId;
   
   // Initialization Logic - Historical Mode Only
   useEffect(() => {
@@ -132,8 +132,12 @@ export function HistoricalReportPage() {
                 </div>
             </div>
             <div className="flex gap-2">
-                 <RecentReportsDropdown />
+                 <PDFExportButton 
-                 <Button size="sm" variant="outline">Export PDF</Button>
+                    symbol={symbol} 
+                    market={market} 
+                    templateName={templateName} 
+                    requestId={id} 
+                 />
             </div>
         </div>
 

frontend/src/pages/ReportPage.tsx

@@ -1,4 +1,4 @@
-import { useState, useEffect, useMemo } from 'react';
+import { useState, useEffect } from 'react';
 import { useParams, useSearchParams } from 'react-router-dom';
 import { Badge } from '@/components/ui/badge';
 import { Tabs, TabsContent, TabsList, TabsTrigger } from "@/components/ui/tabs"
@@ -7,17 +7,17 @@ import { WorkflowVisualizer } from '@/components/workflow/WorkflowVisualizer';
 import { ContextExplorer } from '@/components/workflow/ContextExplorer';
 import { useWorkflowStore } from '@/stores/useWorkflowStore';
 import { TaskStatus, schemas } from '@/api/schema.gen';
-import { Loader2, CheckCircle2, AlertCircle, Clock, PanelLeftClose, PanelLeftOpen, FileText, GitBranch, TerminalSquare, X, List, Trash2 } from 'lucide-react';
+import { Loader2, CheckCircle2, AlertCircle, Clock, PanelLeftClose, PanelLeftOpen, TerminalSquare, X } from 'lucide-react';
 import { Button } from '@/components/ui/button';
 import ReactMarkdown from 'react-markdown';
 import remarkGfm from 'remark-gfm';
 import { useAnalysisTemplates } from "@/hooks/useConfig"
-import { RecentReportsDropdown } from '@/components/RecentReportsDropdown';
 import { WorkflowStatus, ConnectionStatus, TaskState } from '@/types/workflow';
 import { Progress } from "@/components/ui/progress"
 import { cn, formatNodeName } from '@/lib/utils';
 
 import { RealtimeLogs } from '@/components/workflow/RealtimeLogs';
+import { PDFExportButton } from '@/components/report/PDFExportButton';
 
 export function ReportPage() {
   const { id } = useParams();
@@ -50,7 +50,7 @@ export function ReportPage() {
   } = useWorkflowStore();
 
   const { data: templates } = useAnalysisTemplates();
-  const templateName = templates && templateId ? templates[templateId]?.name : templateId;
+  const templateName = templates?.find(t => t.id === templateId)?.name || templateId;
   
   // Initialization & Connection Logic
   useEffect(() => {
@@ -155,32 +155,12 @@ export function ReportPage() {
                 </div>
             </div>
             <div className="flex gap-2">
-                 <RecentReportsDropdown />
+                 <PDFExportButton 
-                 <Button 
+                    symbol={symbol} 
-                    size="sm" 
+                    market={market} 
-                    variant="destructive" 
+                    templateName={templateName} 
-                    className="gap-2"
+                    requestId={id} 
-                    onClick={async () => {
+                 />
-                        if (confirm("Are you sure you want to clear ALL history? This cannot be undone.")) {
-                            try {
-                                 const res = await fetch('/api/v1/system/history', { method: 'DELETE' });
-                                 if (res.ok) {
-                                     window.location.href = '/';
-                                 } else {
-                                     console.error("Failed to clear history");
-                                     alert("Failed to clear history");
-                                 }
-                            } catch (e) {
-                                 console.error(e);
-                                 alert("Error clearing history");
-                            }
-                        }
-                    }}
-                 >
-                    <Trash2 className="h-4 w-4" />
-                    Clear History
-                 </Button>
-                 <Button size="sm" variant="outline">Export PDF</Button>
             </div>
         </div>
 
@@ -480,7 +460,7 @@ function TaskDetailView({ taskId, task, requestId, mode }: { taskId: string, tas
             {/* Main Report View */}
             <div className="flex-1 overflow-auto p-8 bg-background">
                  <div className="w-full">
-                    <div className="prose dark:prose-invert max-w-none prose-p:text-foreground prose-headings:text-foreground prose-li:text-foreground prose-strong:text-foreground prose-span:text-foreground prose-td:text-foreground prose-th:text-foreground">
+                    <div className="prose dark:prose-invert max-w-none">
                         {task?.content ? (
                             <ReactMarkdown remarkPlugins={[remarkGfm]}>
                                 {task.content || ''}

frontend/vite.config.ts

@@ -7,17 +7,26 @@ export default defineConfig(({ mode }) => {
   const env = loadEnv(mode, process.cwd(), '')
   return {
     plugins: [react()],
+    // Explicitly configure public directory behavior if needed, 
+    // but usually 'public' is default.
+    publicDir: 'public', 
     optimizeDeps: {
       exclude: ['dagre'], 
       // 'web-worker' needs to be optimized or handled correctly by Vite for elkjs
-      include: ['elkjs/lib/elk.bundled.js'] 
+      include: ['elkjs/lib/elk.bundled.js', 'buffer'] 
     },
     resolve: {
       alias: {
         "@": path.resolve(__dirname, "./src"),
+        // Force buffer to resolve to the installed package, not node built-in
+        buffer: "buffer", 
       },
     },
     server: {
+      // Ensure static files are served correctly
+      fs: {
+        strict: false,
+      },
       proxy: {
         '/api': {
           target: env.VITE_API_TARGET || 'http://localhost:4000',

package.json

@@ -3,9 +3,14 @@
     "@radix-ui/react-dialog": "^1.1.15",
     "@radix-ui/react-popover": "^1.1.15",
     "@radix-ui/react-progress": "^1.1.8",
+    "@react-pdf/renderer": "^4.3.1",
     "cmdk": "^1.1.1",
     "elkjs": "^0.11.0",
+    "html-to-image": "^1.11.13",
     "immer": "^10.2.0",
+    "marked": "^17.0.1",
+    "react-markdown": "^10.1.0",
+    "remark-gfm": "^4.0.1",
     "zustand": "^5.0.8"
   }
 }

services/api-gateway/Cargo.toml

@@ -5,7 +5,7 @@ edition = "2024"
 
 [dependencies]
 # Web Service
-axum = "0.8.7"
+axum = { version = "0.8.7", features = ["multipart"] }
 tokio = { version = "1", features = ["full"] }
 tower-http = { version = "0.6.6", features = ["cors", "trace"] }
 utoipa = { version = "5.4", features = ["chrono", "uuid"] }
@@ -21,7 +21,7 @@ futures-util = "0.3"
 async-stream = "0.3"
 
 # HTTP Client
-reqwest = { version = "0.12", default-features = false, features = ["json", "rustls-tls", "stream"] }
+reqwest = { version = "0.12", default-features = false, features = ["json", "rustls-tls", "stream", "multipart"] }
 
 # Concurrency & Async
 uuid = { version = "1.8", features = ["v4"] }

services/api-gateway/src/api.rs

@@ -2,7 +2,7 @@ use crate::error::Result;
 use crate::state::AppState;
 use axum::{
     Router,
-    extract::{Path, Query, State},
+    extract::{Path, Query, State, Multipart},
     http::StatusCode,
     response::{IntoResponse, Json},
     routing::{get, post},
@@ -13,7 +13,7 @@ use common_contracts::config_models::{
     AnalysisTemplateSummary, AnalysisTemplateSet
 };
 use common_contracts::dtos::{SessionDataDto, WorkflowHistoryDto, WorkflowHistorySummaryDto};
-use common_contracts::messages::GenerateReportCommand;
+use common_contracts::messages::{GenerateReportCommand, StartWorkflowCommand, SyncStateCommand, WorkflowEvent};
 use common_contracts::observability::{TaskProgress, ObservabilityTaskStatus};
 use common_contracts::registry::ProviderMetadata;
 use common_contracts::subjects::{NatsSubject, SubjectMessage};
@@ -133,8 +133,6 @@ async fn mock_models() -> impl IntoResponse {
     (StatusCode::OK, [(header::CONTENT_TYPE, "application/json")], Json(body))
 }
 
-use common_contracts::messages::{StartWorkflowCommand, SyncStateCommand, WorkflowEvent};
-
 /// [DELETE /v1/system/history]
 #[utoipa::path(
     delete,
@@ -213,8 +211,64 @@ fn create_v1_router() -> Router<AppState> {
         .route("/registry/heartbeat", post(registry::heartbeat))
         .route("/registry/deregister", post(registry::deregister_service))
         .route("/registry/providers", get(get_registered_providers))
+        // PDF Generation Proxy
+        .route("/generate-pdf", post(proxy_generate_pdf))
 }
 
+async fn proxy_generate_pdf(
+    State(state): State<AppState>,
+    multipart: Multipart,
+) -> Result<impl IntoResponse> {
+    let url = format!(
+        "{}/generate-pdf",
+        state.config.report_generator_service_url.trim_end_matches('/')
+    );
+
+    let mut form = reqwest::multipart::Form::new();
+    let mut multipart = multipart;
+    
+    while let Some(field) = multipart.next_field().await.map_err(|e| crate::error::AppError::BadRequest(e.to_string()))? {
+        let name = field.name().unwrap_or("").to_string();
+        if name == "index.html" {
+             let data = field.bytes().await.map_err(|e| crate::error::AppError::BadRequest(e.to_string()))?;
+             let part = reqwest::multipart::Part::bytes(data.to_vec())
+                 .file_name("index.html")
+                 .mime_str("text/html")
+                 .map_err(|e| crate::error::AppError::Internal(anyhow::anyhow!(e)))?;
+             form = form.part("index.html", part); 
+        }
+    }
+
+    let client = reqwest::Client::new();
+    let response = client.post(&url)
+        .multipart(form)
+        .send()
+        .await
+        .map_err(|e| crate::error::AppError::Internal(anyhow::anyhow!(e)))?;
+
+    if !response.status().is_success() {
+        let error_text = response.text().await.unwrap_or_default();
+        return Err(crate::error::AppError::Internal(anyhow::anyhow!("Report service failed: {}", error_text)));
+    }
+
+    let content_type = response.headers().get(reqwest::header::CONTENT_TYPE)
+        .and_then(|v| v.to_str().ok())
+        .unwrap_or("application/pdf")
+        .to_string();
+        
+    let body_stream = axum::body::Body::from_stream(response.bytes_stream());
+
+    Ok(axum::response::Response::builder()
+        .status(StatusCode::OK)
+        .header("Content-Type", content_type)
+        .header("Content-Disposition", "attachment; filename=\"report.pdf\"")
+        .body(body_stream)
+        .unwrap())
+}
+
+// ... rest of file (unchanged) ...
+// Including legacy config and other handlers here to complete file write...
+
 // --- Legacy Config Compatibility ---
 
 #[derive(Serialize, Default)]
@@ -327,7 +381,7 @@ fn project_data_sources(
             (key, entry)
         })
         .collect()
-}
+    }
 
 fn provider_id(provider: &DataSourceProvider) -> &'static str {
     match provider {
@@ -889,7 +943,7 @@ pub struct TestLlmConfigRequest {
     pub model_id: String,
 }
 
-/// [POST /v1/configs/llm/test]
+/// [POST /api/v1/configs/llm/test]
 #[utoipa::path(
     post,
     path = "/api/v1/configs/llm/test",
@@ -1366,4 +1420,4 @@ async fn proxy_context_diff(
         StatusCode::from_u16(status.as_u16()).unwrap_or(StatusCode::INTERNAL_SERVER_ERROR),
         axum::body::Body::from(body),
     ))
-}
+}

services/report-generator-service/Cargo.toml

@@ -5,7 +5,7 @@ edition = "2024"
 
 [dependencies]
 # Web Service
-axum = "0.8.7"
+axum = { version = "0.8.7", features = ["multipart"] }
 tokio = { version = "1.0", features = ["full"] }
 tower-http = { version = "0.6.6", features = ["cors"] }
 
@@ -18,7 +18,7 @@ async-nats = "0.45.0"
 futures = "0.3"
 
 # Data Persistence Client
-reqwest = { version = "0.12.4", default-features = false, features = ["json", "rustls-tls"] }
+reqwest = { version = "0.12.4", default-features = false, features = ["json", "rustls-tls", "multipart"] }
 
 # Concurrency & Async
 async-trait = "0.1.80"

services/report-generator-service/src/api.rs

@@ -1,17 +1,19 @@
 use std::collections::HashMap;
 use axum::{
-    extract::{State, Query},
+    extract::{State, Query, Multipart},
     http::StatusCode,
-    response::{Json, sse::{Event, Sse}},
+    response::{Json, sse::{Event, Sse}, IntoResponse, Response},
     routing::{get, post},
     Router,
+    body::Body,
 };
 use common_contracts::observability::{HealthStatus, ServiceStatus, TaskProgress};
 use serde::Deserialize;
 use uuid::Uuid;
 use crate::state::AppState;
 use crate::llm_client::LlmClient;
-use futures::Stream; // Ensure futures is available
+use futures::Stream;
+use reqwest::multipart;
 
 pub fn create_router(app_state: AppState) -> Router {
     Router::new()
@@ -19,6 +21,7 @@ pub fn create_router(app_state: AppState) -> Router {
         .route("/tasks", get(get_current_tasks))
         .route("/test-llm", post(test_llm_connection))
         .route("/analysis-results/stream", get(stream_analysis_results))
+        .route("/generate-pdf", post(generate_pdf))
         .with_state(app_state)
 }
 
@@ -26,7 +29,6 @@ pub fn create_router(app_state: AppState) -> Router {
 /// Provides the current health status of the module.
 async fn health_check(State(_state): State<AppState>) -> Json<HealthStatus> {
     let mut details = HashMap::new();
-    // In a real scenario, we would check connections to the message bus, etc.
     details.insert("message_bus_connection".to_string(), "ok".to_string());
     
     let status = HealthStatus {
@@ -79,7 +81,6 @@ pub struct StreamQuery {
 }
 
 /// [GET /analysis-results/stream]
-/// SSE endpoint for streaming analysis results.
 async fn stream_analysis_results(
     State(state): State<AppState>,
     Query(query): Query<StreamQuery>,
@@ -97,7 +98,6 @@ async fn stream_analysis_results(
                      break;
                  },
                  Err(tokio::sync::broadcast::error::RecvError::Lagged(cnt)) => {
-                     // Lagged, maybe log it. 
                      tracing::warn!("Stream lagged by {} messages", cnt);
                  }
              }
@@ -106,3 +106,69 @@ async fn stream_analysis_results(
 
     Sse::new(stream).keep_alive(axum::response::sse::KeepAlive::default())
 }
+
+/// [POST /generate-pdf]
+/// Receives HTML content as multipart form data, sends to Gotenberg, and returns PDF.
+async fn generate_pdf(
+    State(state): State<AppState>,
+    mut multipart: Multipart,
+) -> Result<impl IntoResponse, (StatusCode, String)> {
+    // 1. Extract HTML content from multipart
+    let mut html_content = String::new();
+    
+    while let Some(field) = multipart.next_field().await.map_err(|e| (StatusCode::BAD_REQUEST, e.to_string()))? {
+        let name = field.name().unwrap_or("").to_string();
+        if name == "index.html" {
+             html_content = field.text().await.map_err(|e| (StatusCode::BAD_REQUEST, e.to_string()))?;
+        }
+    }
+
+    if html_content.is_empty() {
+        return Err((StatusCode::BAD_REQUEST, "Missing index.html field".to_string()));
+    }
+
+    // 2. Prepare Gotenberg Request
+    // Gotenberg expects multipart/form-data with 'files' (index.html)
+    let form = multipart::Form::new()
+        .part("files", multipart::Part::text(html_content).file_name("index.html").mime_str("text/html").unwrap())
+        // Optional: Customize PDF options
+        .text("marginTop", "0")
+        .text("marginBottom", "0")
+        .text("marginLeft", "0")
+        .text("marginRight", "0")
+        .text("printBackground", "true") // Print background graphics
+        .text("preferCssPageSize", "true"); // Use CSS @page size
+
+    let gotenberg_url = format!("{}/forms/chromium/convert/html", state.config.gotenberg_url);
+    
+    tracing::info!("Sending request to Gotenberg: {}", gotenberg_url);
+
+    // 3. Call Gotenberg
+    let client = reqwest::Client::new();
+    let response = client.post(&gotenberg_url)
+        .multipart(form)
+        .send()
+        .await
+        .map_err(|e| (StatusCode::INTERNAL_SERVER_ERROR, format!("Failed to contact Gotenberg: {}", e)))?;
+
+    if !response.status().is_success() {
+        let error_text = response.text().await.unwrap_or_default();
+        tracing::error!("Gotenberg error: {}", error_text);
+        return Err((StatusCode::INTERNAL_SERVER_ERROR, format!("Gotenberg conversion failed: {}", error_text)));
+    }
+
+    // 4. Stream PDF back to client
+    let content_type = response.headers().get(reqwest::header::CONTENT_TYPE)
+        .and_then(|v| v.to_str().ok())
+        .unwrap_or("application/pdf")
+        .to_string();
+        
+    let body_stream = Body::from_stream(response.bytes_stream());
+
+    Ok(Response::builder()
+        .status(StatusCode::OK)
+        .header("Content-Type", content_type)
+        .header("Content-Disposition", "attachment; filename=\"report.pdf\"")
+        .body(body_stream)
+        .unwrap())
+}

services/report-generator-service/src/config.rs

@@ -6,6 +6,12 @@ pub struct AppConfig {
     pub nats_addr: String,
     pub data_persistence_service_url: String,
     pub workflow_data_path: String,
+    #[serde(default = "default_gotenberg_url")]
+    pub gotenberg_url: String,
+}
+
+fn default_gotenberg_url() -> String {
+    "http://gotenberg:3000".to_string()
 }
 
 #[allow(dead_code)]

services/workflow-orchestrator-service/src/dag_scheduler.rs

@@ -1,4 +1,4 @@
-use std::collections::HashMap;
+use std::collections::{HashMap, HashSet};
 use uuid::Uuid;
 use common_contracts::workflow_types::{TaskStatus, TaskContext};
 use common_contracts::messages::{TaskType, TaskMetadata};
@@ -87,6 +87,9 @@ pub struct DagScheduler {
     pub forward_deps: HashMap<String, Vec<String>>,
     /// TaskID -> List of upstream TaskIDs
     pub reverse_deps: HashMap<String, Vec<String>>,
+    /// Set of (from, to) pairs representing weak dependencies
+    #[serde(default)]
+    pub weak_dependencies: HashSet<(String, String)>,
     
     pub commit_tracker: CommitTracker,
     
@@ -162,6 +165,7 @@ impl DagScheduler {
             nodes: HashMap::new(),
             forward_deps: HashMap::new(),
             reverse_deps: HashMap::new(),
+            weak_dependencies: HashSet::new(),
             commit_tracker: CommitTracker::new(initial_commit),
             workflow_finished_flag: false,
             start_time: chrono::Utc::now(),
@@ -193,6 +197,11 @@ impl DagScheduler {
         self.forward_deps.entry(from.to_string()).or_default().push(to.to_string());
         self.reverse_deps.entry(to.to_string()).or_default().push(from.to_string());
     }
+    
+    pub fn add_weak_dependency(&mut self, from: &str, to: &str) {
+        self.add_dependency(from, to);
+        self.weak_dependencies.insert((from.to_string(), to.to_string()));
+    }
 
     /// Get all tasks that have no dependencies (roots)
     pub fn get_initial_tasks(&self) -> Vec<String> {
@@ -347,6 +356,48 @@ impl DagScheduler {
         }
         true
     }
+    
+    /// Check if a task *should* be dispatched based on the success/failure of its dependencies.
+    /// Returns OK(()) if it can run, Err(reason) if it should fail/skip.
+    pub fn check_dispatch_conditions(&self, task_id: &str) -> Result<(), String> {
+        let deps = match self.reverse_deps.get(task_id) {
+            Some(d) => d,
+            None => return Ok(()), // No dependencies
+        };
+        
+        let mut weak_deps_total = 0;
+        let mut weak_deps_failed = 0;
+        
+        for dep_id in deps {
+             let status = self.nodes.get(dep_id).map(|n| n.status).unwrap_or(TaskStatus::Failed);
+             let is_weak = self.weak_dependencies.contains(&(dep_id.clone(), task_id.to_string()));
+             
+             if is_weak {
+                 weak_deps_total += 1;
+                 if status != TaskStatus::Completed {
+                     weak_deps_failed += 1;
+                 }
+             } else {
+                 // Strong dependency
+                 if status != TaskStatus::Completed {
+                     return Err(format!("Strong dependency {} failed or skipped", dep_id));
+                 }
+             }
+        }
+        
+        // Weak Dependency Logic: 
+        // If there are weak dependencies, at least ONE must succeed?
+        // User says: "Weak dependency... if ALL of them fail... then it will fail."
+        // This implies that if *any* weak dependency succeeds, we proceed (assuming strong ones also succeeded).
+        // But wait, what if there are NO strong dependencies? Then we rely solely on weak ones.
+        // If there are strong dependencies and they succeeded, but ALL weak ones failed -> Fail?
+        
+        if weak_deps_total > 0 && weak_deps_failed == weak_deps_total {
+            return Err(format!("All weak dependencies failed ({}/{})", weak_deps_failed, weak_deps_total));
+        }
+        
+        Ok(())
+    }
 
     /// Resolve the context (Base Commit) for a task.
     /// If multiple dependencies, perform Merge or Fast-Forward.

services/workflow-orchestrator-service/src/workflow.rs

@@ -340,6 +340,34 @@ impl WorkflowEngine {
         if evt.status == TaskStatus::Completed || evt.status == TaskStatus::Failed || evt.status == TaskStatus::Skipped {
             let ready_tasks = dag.get_ready_downstream_tasks(&evt.task_id);
             for task_id in ready_tasks {
+                // Check dependency constraints (Weak/Strong)
+                if let Err(reason) = dag.check_dispatch_conditions(&task_id) {
+                    warn!("Task {} execution prevented: {}", task_id, reason);
+                    
+                    // Fail the task
+                    dag.update_status(&task_id, TaskStatus::Failed);
+                    dag.cancel_downstream(&task_id);
+
+                    // Notify Failure
+                    let fail_event = WorkflowEvent::TaskStateChanged {
+                        task_id: task_id.clone(),
+                        task_type: dag.nodes.get(&task_id).map(|n| n.task_type).unwrap_or(TaskType::Analysis),
+                        status: MsgTaskStatus::Failed,
+                        message: Some(format!("Dependency failure: {}", reason)),
+                        timestamp: chrono::Utc::now().timestamp_millis(),
+                        progress: None,
+                        input_commit: None,
+                        output_commit: None,
+                    };
+                    
+                    let subject = common_contracts::subjects::NatsSubject::WorkflowProgress(req_id).to_string();
+                    if let Ok(payload) = serde_json::to_vec(&fail_event) {
+                         let _ = self.nats.publish(subject, payload.into()).await;
+                    }
+                    
+                    continue;
+                }
+
                 if let Err(e) = self.dispatch_task(&mut dag, &task_id, &self.state.vgcs).await {
                     error!("Failed to dispatch task {}: {}", task_id, e);
                     info!("Failed to dispatch task {}: {}", task_id, e);
@@ -868,9 +896,9 @@ impl WorkflowEngine {
 
             // Dependencies
             if module_config.dependencies.is_empty() {
-                // If no analysis dependencies, depend on Data Fetch
+                // If no analysis dependencies, depend on Data Fetch (Weak Dependency)
                 for fetch_task in &fetch_tasks {
-                    dag.add_dependency(fetch_task, &task_id);
+                    dag.add_weak_dependency(fetch_task, &task_id);
                 }
             } else {
                 // Depend on other analysis modules