docs: Re-execute tutorials with datajoint-python master

- Add datajoint from master branch to pip_requirements.txt
- Reference lcms-demo in configuration docs as example project
- Re-execute all 22 tutorials with PostgreSQL backend

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: dimitri-yatsenko

pip_requirements.txt

@@ -9,3 +9,6 @@ mkdocstrings[python]
 mkdocs-gen-files
 mkdocs-literate-nav
 mkdocs-autorefs
+
+# DataJoint from master for tutorials
+git+https://github.com/datajoint/datajoint-python.git@master

src/how-to/configure-database.md

@@ -4,6 +4,8 @@ Set up your DataJoint database connection.
 
 > **Tip:** [DataJoint.com](https://datajoint.com) handles database configuration automatically with fully managed infrastructure and support.
 
+> **Example:** See [lcms-demo](https://github.com/datajoint/lcms-demo) for a complete DataJoint project with configuration examples.
+
 ## Configuration Structure
 
 DataJoint separates configuration into two parts:

src/how-to/master-part.ipynb

@@ -2,6 +2,8 @@
 
 DataJoint configuration options and settings.
 
+> **Example:** See [lcms-demo](https://github.com/datajoint/lcms-demo) for a complete project with configuration files.
+
 ## Configuration Sources
 
 Configuration is loaded in priority order:

src/how-to/model-relationships.ipynb

@@ -20,18 +20,18 @@
    "id": "cell-1",
    "metadata": {
     "execution": {
-     "iopub.execute_input": "2026-01-27T21:28:21.719728Z",
-     "iopub.status.busy": "2026-01-27T21:28:21.719367Z",
-     "iopub.status.idle": "2026-01-27T21:28:22.477252Z",
-     "shell.execute_reply": "2026-01-27T21:28:22.476976Z"
+     "iopub.execute_input": "2026-02-06T17:44:16.518834Z",
+     "iopub.status.busy": "2026-02-06T17:44:16.518722Z",
+     "iopub.status.idle": "2026-02-06T17:44:17.302635Z",
+     "shell.execute_reply": "2026-02-06T17:44:17.302249Z"
     }
    },
    "outputs": [
     {
      "name": "stdout",
      "output_type": "stream",
      "text": [
-      "[2026-01-27 15:28:22] DataJoint 2.1.0a9 connected to postgres@127.0.0.1:5432\n"
+      "[2026-02-06 11:44:17] DataJoint 2.1.0 connected to datajoint@127.0.0.1:5432\n"
      ]
     }
    ],
@@ -56,10 +56,10 @@
    "id": "cell-3",
    "metadata": {
     "execution": {
-     "iopub.execute_input": "2026-01-27T21:28:22.478948Z",
-     "iopub.status.busy": "2026-01-27T21:28:22.478757Z",
-     "iopub.status.idle": "2026-01-27T21:28:22.481499Z",
-     "shell.execute_reply": "2026-01-27T21:28:22.481220Z"
+     "iopub.execute_input": "2026-02-06T17:44:17.304614Z",
+     "iopub.status.busy": "2026-02-06T17:44:17.304397Z",
+     "iopub.status.idle": "2026-02-06T17:44:17.307345Z",
+     "shell.execute_reply": "2026-02-06T17:44:17.306939Z"
     }
    },
    "outputs": [],
@@ -94,10 +94,10 @@
    "id": "cell-4",
    "metadata": {
     "execution": {
-     "iopub.execute_input": "2026-01-27T21:28:22.482757Z",
-     "iopub.status.busy": "2026-01-27T21:28:22.482672Z",
-     "iopub.status.idle": "2026-01-27T21:28:22.499825Z",
-     "shell.execute_reply": "2026-01-27T21:28:22.499564Z"
+     "iopub.execute_input": "2026-02-06T17:44:17.309265Z",
+     "iopub.status.busy": "2026-02-06T17:44:17.308959Z",
+     "iopub.status.idle": "2026-02-06T17:44:17.327762Z",
+     "shell.execute_reply": "2026-02-06T17:44:17.327387Z"
     }
    },
    "outputs": [],
@@ -117,10 +117,10 @@
    "id": "cell-5",
    "metadata": {
     "execution": {
-     "iopub.execute_input": "2026-01-27T21:28:22.501145Z",
-     "iopub.status.busy": "2026-01-27T21:28:22.501036Z",
-     "iopub.status.idle": "2026-01-27T21:28:22.511227Z",
-     "shell.execute_reply": "2026-01-27T21:28:22.510993Z"
+     "iopub.execute_input": "2026-02-06T17:44:17.329429Z",
+     "iopub.status.busy": "2026-02-06T17:44:17.329305Z",
+     "iopub.status.idle": "2026-02-06T17:44:17.342630Z",
+     "shell.execute_reply": "2026-02-06T17:44:17.342304Z"
     }
    },
    "outputs": [
@@ -184,10 +184,10 @@
    "id": "cell-8",
    "metadata": {
     "execution": {
-     "iopub.execute_input": "2026-01-27T21:28:22.512625Z",
-     "iopub.status.busy": "2026-01-27T21:28:22.512525Z",
-     "iopub.status.idle": "2026-01-27T21:28:22.515254Z",
-     "shell.execute_reply": "2026-01-27T21:28:22.514983Z"
+     "iopub.execute_input": "2026-02-06T17:44:17.344250Z",
+     "iopub.status.busy": "2026-02-06T17:44:17.344126Z",
+     "iopub.status.idle": "2026-02-06T17:44:17.346886Z",
+     "shell.execute_reply": "2026-02-06T17:44:17.346661Z"
     }
    },
    "outputs": [],
@@ -219,10 +219,10 @@
    "id": "cell-9",
    "metadata": {
     "execution": {
-     "iopub.execute_input": "2026-01-27T21:28:22.516445Z",
-     "iopub.status.busy": "2026-01-27T21:28:22.516338Z",
-     "iopub.status.idle": "2026-01-27T21:28:22.533379Z",
-     "shell.execute_reply": "2026-01-27T21:28:22.533106Z"
+     "iopub.execute_input": "2026-02-06T17:44:17.348070Z",
+     "iopub.status.busy": "2026-02-06T17:44:17.347965Z",
+     "iopub.status.idle": "2026-02-06T17:44:17.364533Z",
+     "shell.execute_reply": "2026-02-06T17:44:17.364232Z"
     }
    },
    "outputs": [
@@ -256,10 +256,10 @@
    "id": "cell-10",
    "metadata": {
     "execution": {
-     "iopub.execute_input": "2026-01-27T21:28:22.534756Z",
-     "iopub.status.busy": "2026-01-27T21:28:22.534660Z",
-     "iopub.status.idle": "2026-01-27T21:28:22.537853Z",
-     "shell.execute_reply": "2026-01-27T21:28:22.537634Z"
+     "iopub.execute_input": "2026-02-06T17:44:17.365931Z",
+     "iopub.status.busy": "2026-02-06T17:44:17.365832Z",
+     "iopub.status.idle": "2026-02-06T17:44:17.369212Z",
+     "shell.execute_reply": "2026-02-06T17:44:17.368862Z"
     }
    },
    "outputs": [],