diff --git a/superset.yaml b/superset.yaml
index 042facf0335..dad34671de6 100644
--- a/superset.yaml
+++ b/superset.yaml
@@ -1,7 +1,7 @@
 package:
   name: superset
   version: "4.1.2"
-  epoch: 0
+  epoch: 1
   description: Data Visualization and Data Exploration Platform
   copyright:
     - license: Apache-2.0
@@ -49,6 +49,10 @@ pipeline:
       tag: ${{package.version}}
       expected-commit: 72538bda06c0deef2140e0df65bf0a13bcddb16c
 
+  - uses: patch
+    with:
+      patches: examples.patch
+
   - name: Build frontend
     working-directory: superset-frontend
     runs: |
diff --git a/superset/examples.patch b/superset/examples.patch
new file mode 100644
index 00000000000..0bd3fe65b2e
--- /dev/null
+++ b/superset/examples.patch
@@ -0,0 +1,145 @@
+diff --git a/superset/examples/helpers.py b/superset/examples/helpers.py
+index 4cc9a47b27..908142ec77 100644
+--- a/superset/examples/helpers.py
++++ b/superset/examples/helpers.py
+@@ -14,6 +14,34 @@
+ # KIND, either express or implied.  See the License for the
+ # specific language governing permissions and limitations
+ # under the License.
++"""Helpers for loading Superset example datasets.
++
++All Superset example data files (CSV, JSON, etc.) are fetched via the
++jsDelivr CDN instead of raw.githubusercontent.com to avoid GitHub API
++rate limits (60 anonymous requests/hour/IP).
++
++jsDelivr is a multi‑CDN front for public GitHub repos and supports
++arbitrary paths including nested folders. It doesn’t use the GitHub REST API
++and advertises unlimited bandwidth for open-source use.
++
++Example URL::
++
++    https://cdn.jsdelivr.net/gh/apache-superset/examples-data@master/datasets/examples/slack/messages.csv
++
++Environment knobs
++-----------------
++``SUPERSET_EXAMPLES_DATA_REF``  (default: ``master``)
++    Tag / branch / SHA to pin so builds remain reproducible.
++
++``SUPERSET_EXAMPLES_BASE_URL``
++    Override the base completely if you want to host the files elsewhere
++    (internal mirror, S3 bucket, ASF downloads, …).  **Include any query
++    string required by your hosting (e.g. ``?raw=true`` if you point back
++    to a GitHub *blob* URL).**
++"""
++
++from __future__ import annotations
++
+ import os
+ from typing import Any
+ 
+@@ -22,27 +50,41 @@ from superset.connectors.sqla.models import SqlaTable
+ from superset.models.slice import Slice
+ from superset.utils import json
+ 
+-BASE_URL = "https://github.com/apache-superset/examples-data/blob/master/"
++# ---------------------------------------------------------------------------
++# Public sample‑data mirror configuration
++# ---------------------------------------------------------------------------
++BASE_COMMIT: str = os.getenv("SUPERSET_EXAMPLES_DATA_REF", "master")
++BASE_URL: str = os.getenv(
++    "SUPERSET_EXAMPLES_BASE_URL",
++    f"https://cdn.jsdelivr.net/gh/apache-superset/examples-data@{BASE_COMMIT}/",
++)
+ 
+-misc_dash_slices: set[str] = set()  # slices assembled in a 'Misc Chart' dashboard
++# Slices assembled into a 'Misc Chart' dashboard
++misc_dash_slices: set[str] = set()
++
++# ---------------------------------------------------------------------------
++# Utility functions
++# ---------------------------------------------------------------------------
+ 
+ 
+ def get_table_connector_registry() -> Any:
++    """Return the SqlaTable registry so we can mock it in unit tests."""
+     return SqlaTable
+ 
+ 
+ def get_examples_folder() -> str:
++    """Return local path to the examples folder (when vendored)."""
+     return os.path.join(app.config["BASE_DIR"], "examples")
+ 
+ 
+ def update_slice_ids(pos: dict[Any, Any]) -> list[Slice]:
+-    """Update slice ids in position_json and return the slices found."""
++    """Update slice ids in ``position_json`` and return the slices found."""
+     slice_components = [
+         component
+         for component in pos.values()
+         if isinstance(component, dict) and component.get("type") == "CHART"
+     ]
+-    slices = {}
++    slices: dict[str, Slice] = {}
+     for name in {component["meta"]["sliceName"] for component in slice_components}:
+         slc = db.session.query(Slice).filter_by(slice_name=name).first()
+         if slc:
+@@ -56,17 +98,24 @@ def update_slice_ids(pos: dict[Any, Any]) -> list[Slice]:
+ 
+ 
+ def merge_slice(slc: Slice) -> None:
+-    o = db.session.query(Slice).filter_by(slice_name=slc.slice_name).first()
+-    if o:
+-        db.session.delete(o)
++    """Upsert a Slice by name."""
++    existing = db.session.query(Slice).filter_by(slice_name=slc.slice_name).first()
++    if existing:
++        db.session.delete(existing)
+     db.session.add(slc)
+ 
+ 
+ def get_slice_json(defaults: dict[Any, Any], **kwargs: Any) -> str:
++    """Return JSON string for a chart definition, merging extra kwargs."""
+     defaults_copy = defaults.copy()
+     defaults_copy.update(kwargs)
+     return json.dumps(defaults_copy, indent=4, sort_keys=True)
+ 
+ 
+ def get_example_url(filepath: str) -> str:
+-    return f"{BASE_URL}{filepath}?raw=true"
++    """Return an absolute URL to *filepath* under the examples‑data repo.
++
++    All calls are routed through jsDelivr unless overridden. Supports nested
++    paths like ``datasets/examples/slack/messages.csv``.
++    """
++    return f"{BASE_URL}{filepath}"
+diff --git a/tests/unit_tests/migrations/viz/time_related_fields_test.py b/tests/unit_tests/migrations/viz/time_related_fields_test.py
+index 4494aff1cf..1ea8a151c0 100644
+--- a/tests/unit_tests/migrations/viz/time_related_fields_test.py
++++ b/tests/unit_tests/migrations/viz/time_related_fields_test.py
+@@ -21,7 +21,7 @@ from tests.unit_tests.migrations.viz.utils import migrate_and_assert
+ 
+ SOURCE_FORM_DATA: dict[str, Any] = {
+     "granularity_sqla": "ds",
+-    "time_range": "100 years ago : now",
++    "time_range": "1925-04-24 : 2025-04-24",
+     "viz_type": "pivot_table",
+ }
+ 
+@@ -29,7 +29,7 @@ TARGET_FORM_DATA: dict[str, Any] = {
+     "form_data_bak": SOURCE_FORM_DATA,
+     "granularity_sqla": "ds",
+     "rowOrder": "value_z_to_a",
+-    "time_range": "100 years ago : now",
++    "time_range": "1925-04-24 : 2025-04-24",
+     "viz_type": "pivot_table_v2",
+ }
+ 
+@@ -40,7 +40,7 @@ def test_migration() -> None:
+     target["adhoc_filters"] = [
+         {
+             "clause": "WHERE",
+-            "comparator": "100 years ago : now",
++            "comparator": "1925-04-24 : 2025-04-24",
+             "expressionType": "SIMPLE",
+             "operator": "TEMPORAL_RANGE",
+             "subject": "ds",