Merge develop into master (v2.9.40)

Revert navigation.tabs: removes the duplicate Material tab bar that was
stacking on top of the custom nb-quicknav header. Group orientation pages
under Portal Guide in the left nav.

README.md

@@ -142,7 +142,7 @@ Additionally, as of May 2026, Nubenetes has reached the **Platinum Operational T
 | :--- | :--- |
 | **Total Technical Resources (Links)** | **18647+** |
 | **Specialized MD Pages** | **162** |
-| **Total Commits** | **6402+** |
+| **Total Commits** | **6405+** |
 | **Primary AI Engine** | **Google Gemini (Agentic)** |
 <!-- HEART_STATS_END -->
 
@@ -180,7 +180,7 @@ The growth of Nubenetes reflects the acceleration of the Cloud Native ecosystem.
 | 6 | 2023 | 30 | 123 | Maintenance & Refinement |
 | 7 | 2024 | 53 | 218 | Curation Strategy Pivot |
 | 8 | 2025 | 5 | 20 | Stability & Research Phase |
-| 9 | 2026 | 2843 | 11,741 | **Agentic AI Surge** (May 2026 Inception) |
+| 9 | 2026 | 2846 | 11,753 | **Agentic AI Surge** (May 2026 Inception) |
 <!-- ANNUAL_GROWTH_END -->
 
 <!-- ANNUAL_CHART_START -->
@@ -196,8 +196,8 @@ xychart-beta
     title "Nubenetes Annual Growth Metrics (2018–2026)"
     x-axis ["2018", "2019", "2020", "2021", "2022", "2023", "2024", "2025", "2026"]
     y-axis "Volume (Commits / Estimated New Refs)" 0 --> 12000
-    bar [1445, 586, 8449, 2193, 1660, 123, 218, 20, 11741]
-    bar [350, 142, 2046, 531, 402, 30, 53, 5, 2843]
+    bar [1445, 586, 8449, 2193, 1660, 123, 218, 20, 11753]
+    bar [350, 142, 2046, 531, 402, 30, 53, 5, 2846]
 ```
 <!-- ANNUAL_CHART_END -->
 
@@ -207,7 +207,7 @@ xychart-beta
 | :--- | :---: | :---: | :--- |
 | 2026-04 | 25 | 103 | Active Curation |
 | 2026-05 | 2101 | 8,677 | **Agentic Inception (Gemini Era)** |
-| 2026-06 | 717 | 2,961 | Active Curation |
+| 2026-06 | 720 | 2,973 | Active Curation |
 <!-- MONTHLY_SURGE_END -->
 
 ### 2.4. Content Distribution and Semantic Clustering

src/v2_optimizer.py

@@ -1784,13 +1784,15 @@ class V2VisionEngine:
                 "nav:",
                 "  - \"🔙 Back to V1 (Exhaustive)\": https://nubenetes.com/v1/",
                 "  - \"The 2026 Vision\": index.md",
-                # Topic Map is a collapsible hub for the three site-orientation
-                # pages (the map itself + how it's built + the tag index), with
-                # topic-map.md as its section index (navigation.indexes).
-                "  - \"Topic Map\":",
-                "    - topic-map.md",
+                # Portal Guide: collapsible hub for the site-orientation / meta
+                # pages — the topic directory, how the portal is curated, the tag
+                # index and the project About. about.md is pulled out of its
+                # Architectural Foundations dimension here (see _FIXED_PAGES below).
+                "  - \"Portal Guide\":",
+                "    - \"Topic Map\": topic-map.md",
                 "    - \"Methodology\": methodology.md",
                 "    - \"Technical Tags\": tags.md",
+                "    - \"About\": about.md",
                 # Videos: prominent top-level dropdown, kept high in the nav with
                 # its category subpages as children.
                 "  - \"Agentic Video Hub\":",
@@ -1804,14 +1806,21 @@ class V2VisionEngine:
                 "    - \"Industry & Geo Digest\": industry-digest.md"
             ]
 
+            # Topic pages promoted into a fixed header group above; skip them in
+            # the dimension loop so they are not also listed under their dimension.
+            _FIXED_PAGES = {"about.md"}
+
             dim_groups = {}
             for f_name, info in data.items():
                 dim_groups.setdefault(info["dim"], []).append(f_name)
 
             for dim in self.dimensions.keys():
                 if dim in dim_groups:
+                    dim_files = [f for f in sorted(dim_groups[dim]) if f not in _FIXED_PAGES]
+                    if not dim_files:
+                        continue
                     dim_nav = [f"  - \"{dim}\":"]
-                    for f in sorted(dim_groups[dim]):
+                    for f in dim_files:
                         dim_nav.append(f"    - \"{data[f]['title']}\": {f}")
                     nav.extend(dim_nav)
 

v2-mkdocs.yml

@@ -29,12 +29,10 @@ theme:
         icon: material/shield-moon-outline
         name: Switch to dark mode
   features:
-    # navigation.tabs: top-level sections render as a top tab bar AND the left
-    # sidebar stays, scoped to the active tab. With ~16 top-level sections the
-    # bar can overflow on narrow viewports; Material handles that with a
-    # horizontal scroll, and .sticky keeps the bar pinned while scrolling.
-    - navigation.tabs
-    - navigation.tabs.sticky
+    # navigation.tabs / .sticky disabled: a top tab bar forces Material to scope
+    # the left sidebar to the active tab only, which breaks the always-populated
+    # vertical list we want. The left sidebar handles all sections as a standard
+    # collapsible list and stays populated on every page incl. home.
     - navigation.top
     - navigation.tracking
     # navigation.sections disabled: render top-level as COLLAPSIBLE nested
@@ -157,10 +155,11 @@ markdown_extensions:
 nav:
   - "🔙 Back to V1 (Exhaustive)": https://nubenetes.com/v1/
   - "The 2026 Vision": index.md
-  - "Topic Map":
-    - topic-map.md
+  - "Portal Guide":
+    - "Topic Map": topic-map.md
     - "Methodology": methodology.md
     - "Technical Tags": tags.md
+    - "About": about.md
   - "Agentic Video Hub":
     - videos/index.md
     - "AI Agents and MCP": videos/ai-agents.md
@@ -176,7 +175,6 @@ nav:
     - "ChatGPT": chatgpt.md
     - "MLOps": mlops.md
   - "Architectural Foundations":
-    - "About": about.md
     - "Cheatsheets": cheatsheets.md
     - "Cloud Arch Diagrams": cloud-arch-diagrams.md
     - "Cloud Asset Inventory": cloud-asset-inventory.md