Wave 2 integration: deps manifest (sigma, graphology, puppeteer-core), test-run emission guard

package-lock.json

@@ -24,6 +24,8 @@
 				"clsx": "^2.1.1",
 				"cmdk": "^1.1.1",
 				"embla-carousel-react": "^8.6.0",
+				"graphology": "^0.26.0",
+				"graphology-layout-forceatlas2": "^0.10.1",
 				"katex": "^0.16.47",
 				"linkedom": "^0.18.13",
 				"lucide-react": "^1.33.0",
@@ -33,11 +35,13 @@
 				"nanoid": "^6.0.1",
 				"next": "^16.3.2",
 				"next-themes": "^0.4.6",
+				"puppeteer-core": "^25.8.0",
 				"radix-ui": "^1.6.7",
 				"react": "^19.2.8",
 				"react-dom": "^19.2.8",
 				"react-jsx-parser": "^2.4.1",
 				"remark-breaks": "^4.0.0",
+				"sigma": "^3.0.3",
 				"streamdown": "^2.5.0",
 				"tailwind-merge": "^3.6.0",
 				"tokenlens": "^1.3.1",
@@ -1408,6 +1412,34 @@
 				"zod": "^3.25.76 || ^4.1.8"
 			}
 		},
+		"node_modules/@puppeteer/browsers": {
+			"version": "3.2.1",
+			"resolved": "https://registry.npmjs.org/@puppeteer/browsers/-/browsers-3.2.1.tgz",
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+			"license": "Apache-2.0",
+			"dependencies": {
+				"modern-tar": "^0.8.0",
+				"yargs": "^18.0.0"
+			},
+			"bin": {
+				"browsers": "lib/main-cli.js"
+			},
+			"engines": {
+				"node": ">=22.12.0"
+			},
+			"peerDependencies": {
+				"proxy-agent": ">=8.0.1",
+				"yauzl": "^2.10.0 || ^3.4.0"
+			},
+			"peerDependenciesMeta": {
+				"proxy-agent": {
+					"optional": true
+				},
+				"yauzl": {
+					"optional": true
+				}
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 		"node_modules/@radix-ui/number": {
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 			"resolved": "https://registry.npmjs.org/@radix-ui/number/-/number-1.1.3.tgz",
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 			"license": "MIT"
 		},
+		"node_modules/ansi-regex": {
+			"version": "6.3.0",
+			"resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-6.3.0.tgz",
+			"integrity": "sha512-WpDfL7NO6j7tH88IDBNVdUJxDh9nmCteAVW9dsep846XdwF4naCBK+/tGLX3KJgcpgMRXCFlTM2hKGoK9FsdrQ==",
+			"license": "MIT",
+			"engines": {
+				"node": ">=12"
+			},
+			"funding": {
+				"url": "https://github.com/chalk/ansi-regex?sponsor=1"
+			}
+		},
+		"node_modules/ansi-styles": {
+			"version": "6.2.3",
+			"resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-6.2.3.tgz",
+			"integrity": "sha512-4Dj6M28JB+oAH8kFkTLUo+a2jwOFkuqb3yucU0CANcRRUbxS0cP0nZYCGjcc3BNXwRIsUVmDGgzawme7zvJHvg==",
+			"license": "MIT",
+			"engines": {
+				"node": ">=12"
+			},
+			"funding": {
+				"url": "https://github.com/chalk/ansi-styles?sponsor=1"
+			}
+		},
 		"node_modules/ansi-to-react": {
 			"version": "6.2.6",
 			"resolved": "https://registry.npmjs.org/ansi-to-react/-/ansi-to-react-6.2.6.tgz",
@@ -4005,6 +4061,31 @@
 				"url": "https://github.com/sponsors/wooorm"
 			}
 		},
+		"node_modules/chromium-bidi": {
+			"version": "17.0.2",
+			"resolved": "https://registry.npmjs.org/chromium-bidi/-/chromium-bidi-17.0.2.tgz",
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+			"license": "Apache-2.0",
+			"dependencies": {
+				"mitt": "^3.0.1",
+				"zod": "^3.24.1"
+			},
+			"engines": {
+				"node": ">=20.19.0 <22.0.0 || >=22.12.0"
+			},
+			"peerDependencies": {
+				"devtools-protocol": "*"
+			}
+		},
+		"node_modules/chromium-bidi/node_modules/zod": {
+			"version": "3.25.76",
+			"resolved": "https://registry.npmjs.org/zod/-/zod-3.25.76.tgz",
+			"integrity": "sha512-gzUt/qt81nXsFGKIFcC3YnfEAx5NkunCfnDlvuBSSFS02bcXu4Lmea0AFIUwbLWxWPx3d9p8S5QoaujKcNQxcQ==",
+			"license": "MIT",
+			"funding": {
+				"url": "https://github.com/sponsors/colinhacks"
+			}
+		},
 		"node_modules/class-variance-authority": {
 			"version": "0.7.1",
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 			"license": "MIT"
 		},
+		"node_modules/cliui": {
+			"version": "9.0.1",
+			"resolved": "https://registry.npmjs.org/cliui/-/cliui-9.0.1.tgz",
+			"integrity": "sha512-k7ndgKhwoQveBL+/1tqGJYNz097I7WOvwbmmU2AR5+magtbjPWQTS1C5vzGkBC8Ym8UWRzfKUzUUqFLypY4Q+w==",
+			"license": "ISC",
+			"dependencies": {
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+				"strip-ansi": "^7.1.0",
+				"wrap-ansi": "^9.0.0"
+			},
+			"engines": {
+				"node": ">=20"
+			}
+		},
+		"node_modules/cliui/node_modules/string-width": {
+			"version": "7.2.0",
+			"resolved": "https://registry.npmjs.org/string-width/-/string-width-7.2.0.tgz",
+			"integrity": "sha512-tsaTIkKW9b4N+AEj+SVA+WhJzV7/zMhcSu78mLKWSk7cXMOSHsBKFWUs0fWwq8QyK3MgJBQRX6Gbi4kYbdvGkQ==",
+			"license": "MIT",
+			"dependencies": {
+				"emoji-regex": "^10.3.0",
+				"get-east-asian-width": "^1.0.0",
+				"strip-ansi": "^7.1.0"
+			},
+			"engines": {
+				"node": ">=18"
+			},
+			"funding": {
+				"url": "https://github.com/sponsors/sindresorhus"
+			}
+		},
 		"node_modules/clsx": {
 			"version": "2.1.1",
 			"resolved": "https://registry.npmjs.org/clsx/-/clsx-2.1.1.tgz",
@@ -4719,6 +4831,12 @@
 				"url": "https://github.com/sponsors/wooorm"
 			}
 		},
+		"node_modules/devtools-protocol": {
+			"version": "0.0.1666840",
+			"resolved": "https://registry.npmjs.org/devtools-protocol/-/devtools-protocol-0.0.1666840.tgz",
+			"integrity": "sha512-gCcO42XCHKEs7Ag0S7aGYsnJ7hlgrO3qderYqeiY0Eqk+0GFfuvT13IA0hHreJTa2KCdDVyGMeOhdMNmrrTjVg==",
+			"license": "BSD-3-Clause"
+		},
 		"node_modules/dom-serializer": {
 			"version": "3.1.1",
 			"resolved": "https://registry.npmjs.org/dom-serializer/-/dom-serializer-3.1.1.tgz",
@@ -4835,6 +4953,12 @@
 				"embla-carousel": "8.6.0"
 			}
 		},
+		"node_modules/emoji-regex": {
+			"version": "10.6.0",
+			"resolved": "https://registry.npmjs.org/emoji-regex/-/emoji-regex-10.6.0.tgz",
+			"integrity": "sha512-toUI84YS5YmxW219erniWD0CIVOo46xGKColeNQRgOzDorgBi1v4D71/OFzgD9GO2UGKIv1C3Sp8DAn0+j5w7A==",
+			"license": "MIT"
+		},
 		"node_modules/enhanced-resolve": {
 			"version": "5.24.5",
 			"resolved": "https://registry.npmjs.org/enhanced-resolve/-/enhanced-resolve-5.24.5.tgz",
@@ -4915,6 +5039,15 @@
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 			}
 		},
+		"node_modules/escalade": {
+			"version": "3.2.0",
+			"resolved": "https://registry.npmjs.org/escalade/-/escalade-3.2.0.tgz",
+			"integrity": "sha512-WUj2qlxaQtO4g6Pq5c29GTcWGDyd8itL8zTlipgECz3JesAiiOKotd8JU6otB3PACgG6xkJUyVhboMS+bje/jA==",
+			"license": "MIT",
+			"engines": {
+				"node": ">=6"
+			}
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 			"version": "1.3.1",
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@@ -4943,6 +5076,15 @@
 				"url": "https://opencollective.com/unified"
 			}
 		},
+		"node_modules/events": {
+			"version": "3.3.0",
+			"resolved": "https://registry.npmjs.org/events/-/events-3.3.0.tgz",
+			"integrity": "sha512-mQw+2fkQbALzQ7V0MY0IqdnXNOeTtP4r0lN9z7AAawCXgqea7bDii20AYrIBrFd/Hx0M2Ocz6S111CaFkUcb0Q==",
+			"license": "MIT",
+			"engines": {
+				"node": ">=0.8.x"
+			}
+		},
 		"node_modules/eventsource-parser": {
 			"version": "3.1.1",
 			"resolved": "https://registry.npmjs.org/eventsource-parser/-/eventsource-parser-3.1.1.tgz",
@@ -5005,6 +5147,15 @@
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 			}
 		},
+		"node_modules/get-caller-file": {
+			"version": "2.0.5",
+			"resolved": "https://registry.npmjs.org/get-caller-file/-/get-caller-file-2.0.5.tgz",
+			"integrity": "sha512-DyFP3BM/3YHTQOCUL/w0OZHR0lpKeGrxotcHWcqNEdnltqFwXVfhEBQ94eIo34AfQpo0rGki4cyIiftY06h2Fg==",
+			"license": "ISC",
+			"engines": {
+				"node": "6.* || 8.* || >= 10.*"
+			}
+		},
 		"node_modules/get-east-asian-width": {
 			"version": "1.6.0",
 			"resolved": "https://registry.npmjs.org/get-east-asian-width/-/get-east-asian-width-1.6.0.tgz",
@@ -5033,6 +5184,46 @@
 			"dev": true,
 			"license": "ISC"
 		},
+		"node_modules/graphology": {
+			"version": "0.26.0",
+			"resolved": "https://registry.npmjs.org/graphology/-/graphology-0.26.0.tgz",
+			"integrity": "sha512-8SSImzgUUYC89Z042s+0r/vMibY7GX/Emz4LDO5e7jYXhuoWfHISPFJYjpRLUSJGq6UQ6xlenvX1p/hJdfXuXg==",
+			"license": "MIT",
+			"dependencies": {
+				"events": "^3.3.0"
+			},
+			"peerDependencies": {
+				"graphology-types": ">=0.24.0"
+			}
+		},
+		"node_modules/graphology-layout-forceatlas2": {
+			"version": "0.10.1",
+			"resolved": "https://registry.npmjs.org/graphology-layout-forceatlas2/-/graphology-layout-forceatlas2-0.10.1.tgz",
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+			"license": "MIT",
+			"dependencies": {
+				"graphology-utils": "^2.1.0"
+			},
+			"peerDependencies": {
+				"graphology-types": ">=0.19.0"
+			}
+		},
+		"node_modules/graphology-types": {
+			"version": "0.24.8",
+			"resolved": "https://registry.npmjs.org/graphology-types/-/graphology-types-0.24.8.tgz",
+			"integrity": "sha512-hDRKYXa8TsoZHjgEaysSRyPdT6uB78Ci8WnjgbStlQysz7xR52PInxNsmnB7IBOM1BhikxkNyCVEFgmPKnpx3Q==",
+			"license": "MIT",
+			"peer": true
+		},
+		"node_modules/graphology-utils": {
+			"version": "2.5.2",
+			"resolved": "https://registry.npmjs.org/graphology-utils/-/graphology-utils-2.5.2.tgz",
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+			"license": "MIT",
+			"peerDependencies": {
+				"graphology-types": ">=0.23.0"
+			}
+		},
 		"node_modules/hachure-fill": {
 			"version": "0.5.2",
 			"resolved": "https://registry.npmjs.org/hachure-fill/-/hachure-fill-0.5.2.tgz",
@@ -6940,6 +7131,21 @@
 			],
 			"license": "MIT"
 		},
+		"node_modules/mitt": {
+			"version": "3.0.1",
+			"resolved": "https://registry.npmjs.org/mitt/-/mitt-3.0.1.tgz",
+			"integrity": "sha512-vKivATfr97l2/QBCYAkXYDbrIWPM2IIKEl7YPhjCvKlG3kE2gm+uBo6nEXK3M5/Ffh/FLpKExzOQ3JJoJGFKBw==",
+			"license": "MIT"
+		},
+		"node_modules/modern-tar": {
+			"version": "0.8.4",
+			"resolved": "https://registry.npmjs.org/modern-tar/-/modern-tar-0.8.4.tgz",
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+			"license": "MIT",
+			"engines": {
+				"node": ">=18.0.0"
+			}
+		},
 		"node_modules/motion": {
 			"version": "13.1.1",
 			"resolved": "https://registry.npmjs.org/motion/-/motion-13.1.1.tgz",
@@ -7281,6 +7487,23 @@
 				"url": "https://github.com/sponsors/wooorm"
 			}
 		},
+		"node_modules/puppeteer-core": {
+			"version": "25.8.0",
+			"resolved": "https://registry.npmjs.org/puppeteer-core/-/puppeteer-core-25.8.0.tgz",
+			"integrity": "sha512-LDOrawV8vfCVk+yLj2ozvajNP4Sv3OV9y3Tpiyy2g2Z+aQlbcozP6KJfI4iSBq7YQER+86ihEtPa5ioiZyWxMQ==",
+			"license": "Apache-2.0",
+			"dependencies": {
+				"@puppeteer/browsers": "3.2.1",
+				"chromium-bidi": "17.0.2",
+				"devtools-protocol": "0.0.1666840",
+				"typed-query-selector": "^2.12.2",
+				"webdriver-bidi-protocol": "0.4.2",
+				"ws": "^8.21.1"
+			},
+			"engines": {
+				"node": ">=22.12.0"
+			}
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 		"node_modules/radix-ui": {
 			"version": "1.6.7",
 			"resolved": "https://registry.npmjs.org/radix-ui/-/radix-ui-1.6.7.tgz",
@@ -7817,6 +8040,16 @@
 				"node": ">=10"
 			}
 		},
+		"node_modules/sigma": {
+			"version": "3.0.3",
+			"resolved": "https://registry.npmjs.org/sigma/-/sigma-3.0.3.tgz",
+			"integrity": "sha512-5H0zFlx6/NTQpqBg4Rm569ZOpnBOXMaS25UQThIWMU3XyzI5AhmorK/gnl87BvJBLhQd0tW4C0LIp3enWzMoNw==",
+			"license": "MIT",
+			"dependencies": {
+				"events": "^3.3.0",
+				"graphology-utils": "^2.5.2"
+			}
+		},
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 			"license": "MIT"
 		},
+		"node_modules/string-width": {
+			"version": "8.2.2",
+			"resolved": "https://registry.npmjs.org/string-width/-/string-width-8.2.2.tgz",
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+			"license": "MIT",
+			"dependencies": {
+				"get-east-asian-width": "^1.5.0",
+				"strip-ansi": "^7.1.2"
+			},
+			"engines": {
+				"node": ">=20"
+			},
+			"funding": {
+				"url": "https://github.com/sponsors/sindresorhus"
+			}
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@@ -7896,6 +8145,21 @@
 				"url": "https://github.com/sponsors/wooorm"
 			}
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+		"node_modules/strip-ansi": {
+			"version": "7.2.0",
+			"resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-7.2.0.tgz",
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+			"license": "MIT",
+			"dependencies": {
+				"ansi-regex": "^6.2.2"
+			},
+			"engines": {
+				"node": ">=12"
+			},
+			"funding": {
+				"url": "https://github.com/chalk/strip-ansi?sponsor=1"
+			}
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@@ -8087,6 +8351,12 @@
 				"npm": ">=9"
 			}
 		},
+		"node_modules/typed-query-selector": {
+			"version": "2.12.2",
+			"resolved": "https://registry.npmjs.org/typed-query-selector/-/typed-query-selector-2.12.2.tgz",
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+			"license": "MIT"
+		},
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@@ -8376,6 +8646,102 @@
 				"url": "https://github.com/sponsors/wooorm"
 			}
 		},
+		"node_modules/webdriver-bidi-protocol": {
+			"version": "0.4.2",
+			"resolved": "https://registry.npmjs.org/webdriver-bidi-protocol/-/webdriver-bidi-protocol-0.4.2.tgz",
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+			"license": "Apache-2.0"
+		},
+		"node_modules/wrap-ansi": {
+			"version": "9.0.2",
+			"resolved": "https://registry.npmjs.org/wrap-ansi/-/wrap-ansi-9.0.2.tgz",
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+			"license": "MIT",
+			"dependencies": {
+				"ansi-styles": "^6.2.1",
+				"string-width": "^7.0.0",
+				"strip-ansi": "^7.1.0"
+			},
+			"engines": {
+				"node": ">=18"
+			},
+			"funding": {
+				"url": "https://github.com/chalk/wrap-ansi?sponsor=1"
+			}
+		},
+		"node_modules/wrap-ansi/node_modules/string-width": {
+			"version": "7.2.0",
+			"resolved": "https://registry.npmjs.org/string-width/-/string-width-7.2.0.tgz",
+			"integrity": "sha512-tsaTIkKW9b4N+AEj+SVA+WhJzV7/zMhcSu78mLKWSk7cXMOSHsBKFWUs0fWwq8QyK3MgJBQRX6Gbi4kYbdvGkQ==",
+			"license": "MIT",
+			"dependencies": {
+				"emoji-regex": "^10.3.0",
+				"get-east-asian-width": "^1.0.0",
+				"strip-ansi": "^7.1.0"
+			},
+			"engines": {
+				"node": ">=18"
+			},
+			"funding": {
+				"url": "https://github.com/sponsors/sindresorhus"
+			}
+		},
+		"node_modules/ws": {
+			"version": "8.21.3",
+			"resolved": "https://registry.npmjs.org/ws/-/ws-8.21.3.tgz",
+			"integrity": "sha512-201TZ/kPWxoPr/OKWjquZR1SWKXcvxdH+e1xrx89b3YbmzLMFCLfnaG1HFIgWzJOEWZ7MvpK++odZufgYR50Rw==",
+			"license": "MIT",
+			"engines": {
+				"node": ">=10.0.0"
+			},
+			"peerDependencies": {
+				"bufferutil": "^4.0.1",
+				"utf-8-validate": ">=5.0.2"
+			},
+			"peerDependenciesMeta": {
+				"bufferutil": {
+					"optional": true
+				},
+				"utf-8-validate": {
+					"optional": true
+				}
+			}
+		},
+		"node_modules/y18n": {
+			"version": "5.0.8",
+			"resolved": "https://registry.npmjs.org/y18n/-/y18n-5.0.8.tgz",
+			"integrity": "sha512-0pfFzegeDWJHJIAmTLRP2DwHjdF5s7jo9tuztdQxAhINCdvS+3nGINqPd00AphqJR/0LhANUS6/+7SCb98YOfA==",
+			"license": "ISC",
+			"engines": {
+				"node": ">=10"
+			}
+		},
+		"node_modules/yargs": {
+			"version": "18.1.0",
+			"resolved": "https://registry.npmjs.org/yargs/-/yargs-18.1.0.tgz",
+			"integrity": "sha512-2rAgRKu54VsHkqI0/tYkmluGXHD4KW7yZoycuqDQ15QOTnc2VVfy0nN/1eMhnQLO00A+dwtK20xuCnc1YGeUyg==",
+			"license": "MIT",
+			"dependencies": {
+				"cliui": "^9.0.1",
+				"escalade": "^3.1.1",
+				"get-caller-file": "^2.0.5",
+				"string-width": "^8.2.1",
+				"y18n": "^5.0.5",
+				"yargs-parser": "^22.0.0"
+			},
+			"engines": {
+				"node": "^20.19.0 || ^22.12.0 || >=23"
+			}
+		},
+		"node_modules/yargs-parser": {
+			"version": "22.0.0",
+			"resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-22.0.0.tgz",
+			"integrity": "sha512-rwu/ClNdSMpkSrUb+d6BRsSkLUq1fmfsY6TOpYzTwvwkg1/NRG85KBy3kq++A8LKQwX6lsu+aWad+2khvuXrqw==",
+			"license": "ISC",
+			"engines": {
+				"node": "^20.19.0 || ^22.12.0 || >=23"
+			}
+		},
 		"node_modules/zod": {
 			"version": "4.4.3",
 			"resolved": "https://registry.npmjs.org/zod/-/zod-4.4.3.tgz",

package.json

@@ -11,7 +11,7 @@
 		"ingest": "tsx src/cli.ts ingest",
 		"graph": "tsx src/cli.ts graph",
 		"what-next": "tsx src/cli.ts what-next",
-		"test": "tsx --test tests/*.test.ts tests/*.test.tsx",
+		"test": "NODE_ENV=test tsx --test tests/*.test.ts tests/*.test.tsx",
 		"typecheck": "tsc --noEmit"
 	},
 	"dependencies": {
@@ -31,6 +31,8 @@
 		"clsx": "^2.1.1",
 		"cmdk": "^1.1.1",
 		"embla-carousel-react": "^8.6.0",
+		"graphology": "^0.26.0",
+		"graphology-layout-forceatlas2": "^0.10.1",
 		"katex": "^0.16.47",
 		"linkedom": "^0.18.13",
 		"lucide-react": "^1.33.0",
@@ -40,11 +42,13 @@
 		"nanoid": "^6.0.1",
 		"next": "^16.3.2",
 		"next-themes": "^0.4.6",
+		"puppeteer-core": "^25.8.0",
 		"radix-ui": "^1.6.7",
 		"react": "^19.2.8",
 		"react-dom": "^19.2.8",
 		"react-jsx-parser": "^2.4.1",
 		"remark-breaks": "^4.0.0",
+		"sigma": "^3.0.3",
 		"streamdown": "^2.5.0",
 		"tailwind-merge": "^3.6.0",
 		"tokenlens": "^1.3.1",

src/server/chat-handler.ts

@@ -51,10 +51,13 @@ export async function handleChatRequest(req: Request, agent?: TeacherAgent): Pro
 			// W4: fold this chat into the knowledge-graph ledgers (tree nodes /
 			// edges, quiz outcomes, taught events) — synchronous but tiny
 			// (append-only JSONL), and errors never touch the response.
-			try {
+			// Skipped under tests: scripted chats are fixtures, not knowledge.
-				emitChat(chatId);
+			if (process.env.NODE_ENV !== "test") {
-			} catch (err) {
+				try {
-				console.error(`[chat ${chatId}] graph emission failed:`, err);
+					emitChat(chatId);
+				} catch (err) {
+					console.error(`[chat ${chatId}] graph emission failed:`, err);
+				}
 			}
 		},
 	});