feat(v2): restore in-page search/tag filter & drop redundant Markdown TOC

Fix: the per-page resource search box with maturity tag-pills stopped
appearing after navigation.instant was enabled (DOMContentLoaded fires only
on first SPA load). Reworked v2_filter.js to init via Material's document$
observable with a DOMContentLoaded fallback, guard double-injection, bind the
clickable-tag delegation once, and add a no-results state. Cache-bust ?v=2.9.12.

Change: removed the duplicated Markdown "## Table of Contents" from all 156 V2
content pages and from v2_optimizer.py — it forced hundreds of links of scroll
on large pages. Replaced by Material's native sticky "On this page" TOC
(removed toc.integrate, added toc.follow). tags.md keeps its TOC (it is an index).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

v2-docs/python.md

@@ -6,89 +6,6 @@
 !!! info "Architectural Context"
     Detailed reference for Python in the context of Developer Ecosystem.
 
-## Table of Contents
-
-1. [Artificial Intelligence](#artificial-intelligence)
-  - [Generative AI](#generative-ai)
-    - [Data Analysis Automation](#data-analysis-automation)
-1. [Backend Development](#backend-development)
-  - [Concurrent Programming](#concurrent-programming)
-    - [System Engineering](#system-engineering)
-1. [Cloud Native Infrastructure](#cloud-native-infrastructure)
-  - [Container Orchestration](#container-orchestration)
-    - [Python Client](#python-client)
-1. [Data Engineering](#data-engineering)
-  - [Python Search Engine](#python-search-engine)
-    - [Elasticsearch](#elasticsearch)
-1. [Data Science](#data-science)
-  - [Data Engineering](#data-engineering-1)
-    - [Database Engines](#database-engines)
-    - [Workflow Orchestration](#workflow-orchestration)
-1. [DevOps](#devops)
-  - [Python Cloud](#python-cloud)
-    - [Configuration Management](#configuration-management)
-    - [Kubernetes](#kubernetes)
-    - [Security](#security)
-  - [Python Packaging](#python-packaging)
-    - [Docker Integration](#docker-integration)
-1. [Infrastructure](#infrastructure)
-  - [AWS SDK](#aws-sdk)
-    - [Boto3 Tutorials](#boto3-tutorials)
-  - [Cloud Storage](#cloud-storage)
-    - [Object Storage Optimization](#object-storage-optimization)
-  - [Data Engineering](#data-engineering-2)
-    - [MLOps Architecture](#mlops-architecture)
-  - [DevOps](#devops-1)
-    - [Cloud Automation](#cloud-automation)
-    - [Infrastructure as Code](#infrastructure-as-code)
-  - [Kubernetes](#kubernetes-1)
-    - [Data Science Platform](#data-science-platform)
-1. [Infrastructure and DevOps](#infrastructure-and-devops)
-  - [Container Orchestration](#container-orchestration-1)
-    - [Microservices Communication](#microservices-communication)
-    - [Scalability](#scalability)
-  - [Dependency Management](#dependency-management)
-    - [AI-Driven Operations](#ai-driven-operations)
-  - [Systems Architecture](#systems-architecture)
-    - [Microservices](#microservices)
-1. [Platform Engineering](#platform-engineering)
-  - [Containerization and Orchestration](#containerization-and-orchestration)
-    - [Docker](#docker)
-1. [Software Development](#software-development)
-  - [Python Microservices](#python-microservices)
-    - [gRPC](#grpc)
-  - [Python Observability](#python-observability)
-    - [Logging](#logging)
-  - [Python Utilities](#python-utilities)
-    - [Script Automation](#script-automation)
-  - [Python Web](#python-web)
-    - [API Frameworks](#api-frameworks)
-1. [Software Engineering](#software-engineering)
-  - [Business Applications](#business-applications)
-    - [Automated Billing](#automated-billing)
-  - [CI-CD](#ci-cd)
-    - [Code Quality](#code-quality)
-  - [Data Validation](#data-validation)
-    - [Parsing](#parsing)
-  - [Microservices](#microservices-1)
-    - [Feature Management](#feature-management)
-  - [Python](#python-1)
-    - [Memory Profiling](#memory-profiling)
-    - [Production Observability](#production-observability)
-    - [Serialization](#serialization)
-    - [Static Analysis](#static-analysis)
-  - [Systems Architecture](#systems-architecture-1)
-    - [Microservices Migration](#microservices-migration)
-  - [Testing](#testing)
-    - [API Testing](#api-testing)
-    - [Test Data Generation](#test-data-generation)
-  - [Web Frameworks](#web-frameworks)
-    - [Asynchronous Frameworks](#asynchronous-frameworks)
-    - [Comprehensive Tutorials](#comprehensive-tutorials)
-    - [Containerization](#containerization)
-    - [Microframeworks](#microframeworks)
-    - [Project Templates](#project-templates)
-
 ## Artificial Intelligence
 
 ### Generative AI