docs: README v0.11 highlights + honest v1.4 framing + readability reorganization

.github/dependabot.yml

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+# Dependabot config — security + dependency hygiene for a public Python package
+# Updates land as PRs against main. CI must pass before merge.
+
+version: 2
+updates:
+  # Core Python dependencies (pyproject.toml + requirements*.txt if present)
+  - package-ecosystem: "pip"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+      day: "monday"
+      time: "09:00"
+      timezone: "Etc/UTC"
+    open-pull-requests-limit: 5
+    labels:
+      - "dependencies"
+    commit-message:
+      prefix: "deps"
+      include: "scope"
+    # Group minor + patch updates together to reduce PR noise.
+    # Major version bumps land as individual PRs for review.
+    groups:
+      python-minor-and-patch:
+        update-types:
+          - "minor"
+          - "patch"
+
+  # GitHub Actions workflow versions
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+      day: "monday"
+      time: "09:00"
+      timezone: "Etc/UTC"
+    open-pull-requests-limit: 3
+    labels:
+      - "dependencies"
+      - "github-actions"
+    commit-message:
+      prefix: "ci"
+      include: "scope"