chore: Refactor CI workflows for pipeline consolidation and manual dispatch triggers

- Updated quality-checks.yml to support manual dispatch with frontend checks.
- Modified rate-limit-integration.yml to remove workflow_run triggers and adjust conditions for execution.
- Removed pull request triggers from repo-health.yml, retaining only scheduled and manual dispatch.
- Adjusted security-pr.yml and supply-chain-pr.yml to eliminate workflow_run dependencies and refine execution conditions.
- Cleaned up supply-chain-verify.yml by removing workflow_run triggers and ensuring proper execution conditions.
- Updated waf-integration.yml to remove workflow_run triggers, allowing manual dispatch only.
- Revised current_spec.md to reflect the consolidation of CI workflows into a single pipeline, detailing objectives, research findings, and implementation plans.

.github/workflows/docker-build.yml

@@ -21,17 +21,7 @@ name: Docker Build, Publish & Test
 # See: docs/plans/current_spec.md (Section 4.1 - docker-build.yml changes)
 
 on:
-  workflow_run:
-    workflows: [Docker Lint]
-    types:
-      - completed
-    branches:
-      - main
-      - development
-      - 'feature/**'
-      - 'hotfix/**'
   workflow_dispatch:
-  workflow_call:
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.event_name }}-${{ github.event_name == 'workflow_run' && github.event.workflow_run.head_branch || github.head_ref || github.ref_name }}