diff --git a/devtool.json b/devtool.json
index 0ef1cdd..e840047 100644
--- a/devtool.json
+++ b/devtool.json
@@ -631,8 +631,68 @@
       "description": "Override decrypted data directory path",
       "default": "",
       "options": []
+    },
+    {
+      "key": "SDT_ENV_PROFILE",
+      "description": "Active SDT runtime environment profile",
+      "default": "dev",
+      "options": [
+        "dev",
+        "ci",
+        "release"
+      ]
+    },
+    {
+      "key": "SDT_LOG_LEVEL",
+      "description": "CLI log verbosity",
+      "default": "information",
+      "options": [
+        "trace",
+        "debug",
+        "information",
+        "warning",
+        "error",
+        "critical"
+      ]
     }
   ],
+  "envProfiles": {
+    "active": "dev",
+    "profiles": [
+      {
+        "id": "dev",
+        "description": "Local development defaults",
+        "inherits": [],
+        "values": {
+          "SDT_ENV_PROFILE": "dev",
+          "SDT_LOG_LEVEL": "information"
+        }
+      },
+      {
+        "id": "ci",
+        "description": "Continuous integration defaults",
+        "inherits": [
+          "dev"
+        ],
+        "values": {
+          "SDT_ENV_PROFILE": "ci",
+          "CI": "true",
+          "SDT_LOG_LEVEL": "warning"
+        }
+      },
+      {
+        "id": "release",
+        "description": "Release build defaults",
+        "inherits": [
+          "dev"
+        ],
+        "values": {
+          "SDT_ENV_PROFILE": "release",
+          "SDT_LOG_LEVEL": "warning"
+        }
+      }
+    ]
+  },
   "toolchains": {
     "python": {
       "executable": "python3.14",
@@ -671,7 +731,56 @@
       "workingDir": "Journal.App"
     }
   },
-  "tooling": null,
+  "tooling": {
+    "tools": [
+      {
+        "tool": "cargo",
+        "preferredInstallCommands": [],
+        "executables": []
+      },
+      {
+        "tool": "dotnet",
+        "preferredInstallCommands": [],
+        "executables": []
+      },
+      {
+        "tool": "node",
+        "preferredInstallCommands": [],
+        "executables": []
+      },
+      {
+        "tool": "npm",
+        "preferredInstallCommands": [],
+        "executables": []
+      },
+      {
+        "tool": "python",
+        "preferredInstallCommands": [],
+        "executables": []
+      }
+    ]
+  },
   "project": null,
-  "debug": null
+  "debug": {
+    "profiles": [],
+    "diagnostics": {
+      "enabled": true,
+      "outputDir": ".sdt/debug",
+      "includeAllEnv": false,
+      "captureEnvKeys": [],
+      "redactSensitive": true,
+      "sensitiveKeyPatterns": [
+        "TOKEN",
+        "SECRET",
+        "PASSWORD",
+        "PWD",
+        "CREDENTIAL",
+        "API_KEY",
+        "ACCESS_KEY",
+        "PRIVATE_KEY"
+      ],
+      "redactionAllowKeys": [],
+      "bundleOnFailure": true
+    }
+  }
 }
diff --git a/devtool.json.bak-20260301-155008 b/devtool.json.bak-20260301-155008
new file mode 100644
index 0000000..0ef1cdd
--- /dev/null
+++ b/devtool.json.bak-20260301-155008
@@ -0,0 +1,677 @@
+{
+  "name": "Project Journal",
+  "version": "0.1.0",
+  "targets": [],
+  "workflows": [
+    {
+      "id": "sidecar",
+      "label": "Publish Sidecar",
+      "description": "Build Journal.Sidecar as self-contained exe \u2192 output/",
+      "group": "Build",
+      "dependsOn": [],
+      "steps": [
+        {
+          "id": "sidecar:run",
+          "label": "Publish Sidecar",
+          "command": "pwsh",
+          "args": [
+            "-NoProfile",
+            "-ExecutionPolicy",
+            "Bypass",
+            "-File",
+            "scripts/publish-sidecar.ps1",
+            "-Configuration",
+            "Release",
+            "-Runtime",
+            "win-x64"
+          ],
+          "workingDir": ".",
+          "action": null,
+          "actionArgs": [],
+          "requires": [
+            {
+              "tool": "python",
+              "installPolicy": "Prompt"
+            },
+            {
+              "tool": "dotnet",
+              "installPolicy": "Prompt"
+            }
+          ]
+        }
+      ]
+    },
+    {
+      "id": "web",
+      "label": "Build Web UI",
+      "description": "Build SvelteKit bundle \u2192 Journal.App/build/",
+      "group": "Build",
+      "dependsOn": [],
+      "steps": [
+        {
+          "id": "web:run",
+          "label": "Build Web UI",
+          "command": "pwsh",
+          "args": [
+            "-NoProfile",
+            "-ExecutionPolicy",
+            "Bypass",
+            "-File",
+            "scripts/publish-app.ps1",
+            "-Target",
+            "web"
+          ],
+          "workingDir": ".",
+          "action": null,
+          "actionArgs": [],
+          "requires": [
+            {
+              "tool": "python",
+              "installPolicy": "Prompt"
+            },
+            {
+              "tool": "node",
+              "installPolicy": "Prompt"
+            },
+            {
+              "tool": "npm",
+              "installPolicy": "Prompt"
+            }
+          ]
+        }
+      ]
+    },
+    {
+      "id": "sync-output",
+      "label": "Sync Build Assets to Output",
+      "description": "Sweep repo for newest builds (Web/Sidecar/Gateway/Tauri) and copy them to the output dir",
+      "group": "Build",
+      "dependsOn": [],
+      "steps": [
+        {
+          "id": "sync-output:run",
+          "label": "Sync Build Assets to Output",
+          "command": "pwsh",
+          "args": [
+            "-NoProfile",
+            "-ExecutionPolicy",
+            "Bypass",
+            "-File",
+            "scripts/sync-output.ps1"
+          ],
+          "workingDir": ".",
+          "action": null,
+          "actionArgs": [],
+          "requires": [
+            {
+              "tool": "python",
+              "installPolicy": "Prompt"
+            }
+          ]
+        }
+      ]
+    },
+    {
+      "id": "webgateway",
+      "label": "Publish WebGateway",
+      "description": "Publish ASP.NET host with embedded web UI \u2192 output/webgateway/",
+      "group": "Build",
+      "dependsOn": [
+        "web"
+      ],
+      "steps": [
+        {
+          "id": "webgateway:run",
+          "label": "Publish WebGateway",
+          "command": "pwsh",
+          "args": [
+            "-NoProfile",
+            "-ExecutionPolicy",
+            "Bypass",
+            "-File",
+            "scripts/publish-webgateway.ps1",
+            "-Configuration",
+            "Release",
+            "-Runtime",
+            "win-x64"
+          ],
+          "workingDir": ".",
+          "action": null,
+          "actionArgs": [],
+          "requires": [
+            {
+              "tool": "python",
+              "installPolicy": "Prompt"
+            },
+            {
+              "tool": "dotnet",
+              "installPolicy": "Prompt"
+            },
+            {
+              "tool": "node",
+              "installPolicy": "Prompt"
+            },
+            {
+              "tool": "npm",
+              "installPolicy": "Prompt"
+            }
+          ]
+        }
+      ]
+    },
+    {
+      "id": "tauri",
+      "label": "Build Tauri Desktop App",
+      "description": "Build desktop exe (no installer) \u2192 Journal.App/src-tauri/target/release/",
+      "group": "Build",
+      "dependsOn": [
+        "sidecar"
+      ],
+      "steps": [
+        {
+          "id": "tauri:run",
+          "label": "Build Tauri Desktop App",
+          "command": "pwsh",
+          "args": [
+            "-NoProfile",
+            "-ExecutionPolicy",
+            "Bypass",
+            "-File",
+            "scripts/publish-app.ps1",
+            "-Target",
+            "tauri",
+            "-TauriBundles",
+            "none"
+          ],
+          "workingDir": ".",
+          "action": null,
+          "actionArgs": [],
+          "requires": [
+            {
+              "tool": "python",
+              "installPolicy": "Prompt"
+            },
+            {
+              "tool": "node",
+              "installPolicy": "Prompt"
+            },
+            {
+              "tool": "npm",
+              "installPolicy": "Prompt"
+            },
+            {
+              "tool": "cargo",
+              "installPolicy": "Prompt"
+            }
+          ]
+        }
+      ]
+    },
+    {
+      "id": "tauri-nsis",
+      "label": "Build Tauri \u002B NSIS Installer",
+      "description": "Build desktop exe with NSIS installer package",
+      "group": "Build",
+      "dependsOn": [
+        "sidecar"
+      ],
+      "steps": [
+        {
+          "id": "tauri-nsis:run",
+          "label": "Build Tauri \u002B NSIS Installer",
+          "command": "pwsh",
+          "args": [
+            "-NoProfile",
+            "-ExecutionPolicy",
+            "Bypass",
+            "-File",
+            "scripts/publish-app.ps1",
+            "-Target",
+            "tauri",
+            "-TauriBundles",
+            "nsis"
+          ],
+          "workingDir": ".",
+          "action": null,
+          "actionArgs": [],
+          "requires": [
+            {
+              "tool": "python",
+              "installPolicy": "Prompt"
+            },
+            {
+              "tool": "node",
+              "installPolicy": "Prompt"
+            },
+            {
+              "tool": "npm",
+              "installPolicy": "Prompt"
+            },
+            {
+              "tool": "cargo",
+              "installPolicy": "Prompt"
+            }
+          ]
+        }
+      ]
+    },
+    {
+      "id": "build-dotnet",
+      "label": "Build .NET Projects",
+      "description": "dotnet build \u2014 all C# projects in solution",
+      "group": "Build",
+      "dependsOn": [],
+      "steps": [
+        {
+          "id": "build-dotnet:run",
+          "label": "Build .NET Projects",
+          "command": "dotnet",
+          "args": [
+            "build"
+          ],
+          "workingDir": ".",
+          "action": null,
+          "actionArgs": [],
+          "requires": [
+            {
+              "tool": "dotnet",
+              "installPolicy": "Prompt"
+            }
+          ]
+        }
+      ]
+    },
+    {
+      "id": "all",
+      "label": "Full Release Build  \u2726",
+      "description": "Sidecar \u2192 Web \u2192 WebGateway \u2192 Tauri, in dependency order",
+      "group": "Build",
+      "dependsOn": [
+        "sidecar",
+        "web",
+        "webgateway",
+        "tauri"
+      ],
+      "steps": []
+    },
+    {
+      "id": "run-gateway-dev",
+      "label": "Run WebGateway Server (Dev)",
+      "description": "Start HTTP gateway via \u0027dotnet run\u0027 at http://localhost:5180",
+      "group": "Dev",
+      "dependsOn": [],
+      "steps": [
+        {
+          "id": "run-gateway-dev:run",
+          "label": "Run WebGateway Server (Dev)",
+          "command": "pwsh",
+          "args": [
+            "-NoProfile",
+            "-ExecutionPolicy",
+            "Bypass",
+            "-File",
+            "scripts/run-webgateway.ps1",
+            "-Mode",
+            "Dev"
+          ],
+          "workingDir": ".",
+          "action": null,
+          "actionArgs": [],
+          "requires": [
+            {
+              "tool": "python",
+              "installPolicy": "Prompt"
+            },
+            {
+              "tool": "dotnet",
+              "installPolicy": "Prompt"
+            }
+          ]
+        }
+      ]
+    },
+    {
+      "id": "run-gateway-prod",
+      "label": "Run WebGateway Server (Output)",
+      "description": "Start compiled gateway from output/webgateway at http://localhost:5180",
+      "group": "Dev",
+      "dependsOn": [],
+      "steps": [
+        {
+          "id": "run-gateway-prod:run",
+          "label": "Run WebGateway Server (Output)",
+          "command": "pwsh",
+          "args": [
+            "-NoProfile",
+            "-ExecutionPolicy",
+            "Bypass",
+            "-File",
+            "scripts/run-webgateway.ps1",
+            "-Mode",
+            "Output"
+          ],
+          "workingDir": ".",
+          "action": null,
+          "actionArgs": [],
+          "requires": [
+            {
+              "tool": "python",
+              "installPolicy": "Prompt"
+            },
+            {
+              "tool": "dotnet",
+              "installPolicy": "Prompt"
+            }
+          ]
+        }
+      ]
+    },
+    {
+      "id": "test",
+      "label": "Run Smoke Tests",
+      "description": "Run all ~80 integration tests in Journal.SmokeTests",
+      "group": "Test",
+      "dependsOn": [],
+      "steps": [
+        {
+          "id": "test:run",
+          "label": "Run Smoke Tests",
+          "command": "dotnet",
+          "args": [
+            "run",
+            "--project",
+            "Journal.SmokeTests/Journal.SmokeTests.csproj"
+          ],
+          "workingDir": ".",
+          "action": null,
+          "actionArgs": [],
+          "requires": [
+            {
+              "tool": "dotnet",
+              "installPolicy": "Prompt"
+            }
+          ]
+        }
+      ]
+    },
+    {
+      "id": "gate",
+      "label": "Run Migration Gate",
+      "description": "Full build \u002B smoke tests \u002B parity check",
+      "group": "Test",
+      "dependsOn": [],
+      "steps": [
+        {
+          "id": "gate:run",
+          "label": "Run Migration Gate",
+          "command": "pwsh",
+          "args": [
+            "-NoProfile",
+            "-ExecutionPolicy",
+            "Bypass",
+            "-File",
+            "scripts/migration-gate.ps1"
+          ],
+          "workingDir": ".",
+          "action": null,
+          "actionArgs": [],
+          "requires": [
+            {
+              "tool": "python",
+              "installPolicy": "Prompt"
+            },
+            {
+              "tool": "dotnet",
+              "installPolicy": "Prompt"
+            }
+          ]
+        }
+      ]
+    },
+    {
+      "id": "nuget-export",
+      "label": "Export NuGet Cache",
+      "description": "Prime and export .nuget cache to zip for offline use",
+      "group": "Cache",
+      "dependsOn": [],
+      "steps": [
+        {
+          "id": "nuget-export:run",
+          "label": "Export NuGet Cache",
+          "command": "pwsh",
+          "args": [
+            "-NoProfile",
+            "-ExecutionPolicy",
+            "Bypass",
+            "-File",
+            "scripts/nuget-export-cache.ps1"
+          ],
+          "workingDir": ".",
+          "action": null,
+          "actionArgs": [],
+          "requires": [
+            {
+              "tool": "python",
+              "installPolicy": "Prompt"
+            },
+            {
+              "tool": "dotnet",
+              "installPolicy": "Prompt"
+            }
+          ]
+        }
+      ]
+    },
+    {
+      "id": "nuget-import",
+      "label": "Import NuGet Cache",
+      "description": "Import cache zip and validate restore",
+      "group": "Cache",
+      "dependsOn": [],
+      "steps": [
+        {
+          "id": "nuget-import:run",
+          "label": "Import NuGet Cache",
+          "command": "pwsh",
+          "args": [
+            "-NoProfile",
+            "-ExecutionPolicy",
+            "Bypass",
+            "-File",
+            "scripts/nuget-import-cache.ps1"
+          ],
+          "workingDir": ".",
+          "action": null,
+          "actionArgs": [],
+          "requires": [
+            {
+              "tool": "python",
+              "installPolicy": "Prompt"
+            },
+            {
+              "tool": "dotnet",
+              "installPolicy": "Prompt"
+            }
+          ]
+        }
+      ]
+    },
+    {
+      "id": "npm-clean",
+      "label": "Clean Node Modules",
+      "description": "Remove Journal.App node_modules (kills node/tauri first)",
+      "group": "System",
+      "dependsOn": [],
+      "steps": [
+        {
+          "id": "npm-clean:run",
+          "label": "Clean Node Modules",
+          "command": "pwsh",
+          "args": [
+            "-NoProfile",
+            "-ExecutionPolicy",
+            "Bypass",
+            "-File",
+            "scripts/npm-clean.ps1"
+          ],
+          "workingDir": ".",
+          "action": null,
+          "actionArgs": [],
+          "requires": [
+            {
+              "tool": "python",
+              "installPolicy": "Prompt"
+            },
+            {
+              "tool": "node",
+              "installPolicy": "Prompt"
+            },
+            {
+              "tool": "npm",
+              "installPolicy": "Prompt"
+            }
+          ]
+        }
+      ]
+    },
+    {
+      "id": "stage-output",
+      "label": "Stage Output Bundle",
+      "description": "Publish sidecar \u002B web \u002B webgateway \u002B tauri, then stage journalapp.exe into output/",
+      "group": "Build",
+      "dependsOn": [],
+      "steps": [
+        {
+          "id": "stage-output:run",
+          "label": "Stage Output Bundle",
+          "command": "pwsh",
+          "args": [
+            "-NoProfile",
+            "-ExecutionPolicy",
+            "Bypass",
+            "-File",
+            "scripts/publish-output.ps1"
+          ],
+          "workingDir": ".",
+          "action": null,
+          "actionArgs": [],
+          "requires": [
+            {
+              "tool": "python",
+              "installPolicy": "Prompt"
+            },
+            {
+              "tool": "dotnet",
+              "installPolicy": "Prompt"
+            },
+            {
+              "tool": "node",
+              "installPolicy": "Prompt"
+            },
+            {
+              "tool": "npm",
+              "installPolicy": "Prompt"
+            },
+            {
+              "tool": "cargo",
+              "installPolicy": "Prompt"
+            }
+          ]
+        }
+      ]
+    }
+  ],
+  "env": [
+    {
+      "key": "JOURNAL_AI_PROVIDER",
+      "description": "AI provider bridge mode",
+      "default": "none",
+      "options": [
+        "none",
+        "python-sidecar"
+      ]
+    },
+    {
+      "key": "JOURNAL_LOG_LEVEL",
+      "description": "Log verbosity for C# backend",
+      "default": "warning",
+      "options": [
+        "trace",
+        "debug",
+        "information",
+        "warning",
+        "error",
+        "critical"
+      ]
+    },
+    {
+      "key": "JOURNAL_NLP_BACKEND",
+      "description": "Python NLP backend selection",
+      "default": "auto",
+      "options": [
+        "auto",
+        "spacy",
+        "fallback"
+      ]
+    },
+    {
+      "key": "JOURNAL_PROJECT_ROOT",
+      "description": "Override project root path (blank = auto-detect)",
+      "default": "",
+      "options": []
+    },
+    {
+      "key": "JOURNAL_VAULT_DIR",
+      "description": "Override vault directory path",
+      "default": "",
+      "options": []
+    },
+    {
+      "key": "JOURNAL_DATA_DIR",
+      "description": "Override decrypted data directory path",
+      "default": "",
+      "options": []
+    }
+  ],
+  "toolchains": {
+    "python": {
+      "executable": "python3.14",
+      "windowsExecutable": "py",
+      "launcherVersion": "-3.14",
+      "venvDir": ".venv",
+      "profiles": [
+        {
+          "id": "cpu",
+          "label": "CPU only (default)",
+          "requirementsFile": "requirements_cpu_only.txt",
+          "extraIndexUrl": "https://download.pytorch.org/whl/cpu",
+          "postInstallCommands": []
+        },
+        {
+          "id": "gpu",
+          "label": "GPU / CUDA",
+          "requirementsFile": "requirements_gpu.txt",
+          "extraIndexUrl": null,
+          "postInstallCommands": []
+        },
+        {
+          "id": "nlp",
+          "label": "NLP / spaCy (optional)",
+          "requirementsFile": "requirements_nlp_optional.txt",
+          "extraIndexUrl": null,
+          "postInstallCommands": [
+            "spacy download en_core_web_sm"
+          ]
+        }
+      ],
+      "pipScript": "scripts/pip-min.ps1"
+    },
+    "node": {
+      "packageManager": "npm",
+      "workingDir": "Journal.App"
+    }
+  },
+  "tooling": null,
+  "project": null,
+  "debug": null
+}