Perform code optimization and document cleanup (#1)

## Summary
- add repository-wide quality tooling and verification scaffolding, including CI workflows, pnpm workspace setup, ESLint/Prettier/markdown checks, and generated-output verification helpers
- reorganize skill sources and generation flow by introducing canonical `_source` variants, generator/manifests, reusable helper abstractions, and shared web-automation/browser utilities
- clean up and expand documentation so the root README flows into docs and skill docs, with clearer development, reviewer, installer, and workflow guidance

## Notable changes
- docs flow and consistency cleanup across `README.md`, `docs/README.md`, and related docs
- new scripts for `check`, docs verification, generated-file verification, shell portability, and safe directory replacement
- refactors in Atlassian and web-automation skill runtimes to reduce duplication and centralize reusable code
- changelog, development documentation, and CI surface updates

## Test Plan
- [ ] `pnpm run check`
- [ ] review generated/manifests and skill sync outputs
- [ ] smoke-check docs flow from `README.md` to `docs/README.md` to skill docs

## Notes
- this branch currently includes tracked `skills/web-automation/shared/node_modules` content that should be reviewed carefully as potentially noisy/accidental committed artifacts

Co-authored-by: Stefano Fiorini <stefano.fiorini@firsthorizon.com>
Reviewed-on: #1

skills/atlassian/claude-code/scripts/src/confluence.ts

@@ -1,3 +1,5 @@
+// ⚠️ GENERATED FILE – do not edit directly. Edit the canonical source in skills/atlassian/shared/scripts/ and run `pnpm run sync:pi`.
+import { dryRunResponse } from "./command-helpers.js";
 import { sendJsonRequest } from "./http.js";
 import type { AtlassianConfig, CommandOutput, FetchLike } from "./types.js";
 
@@ -177,13 +179,7 @@ export function createConfluenceClient(options: ConfluenceClientOptions) {
         },
       };
 
-      if (input.dryRun) {
-        return {
-          ok: true,
-          dryRun: true,
-          data: request,
-        };
-      }
+      if (input.dryRun) return dryRunResponse(request);
 
       const raw = await sendJsonRequest({
         config,
@@ -223,13 +219,7 @@ export function createConfluenceClient(options: ConfluenceClientOptions) {
         },
       };
 
-      if (input.dryRun) {
-        return {
-          ok: true,
-          dryRun: true,
-          data: request,
-        };
-      }
+      if (input.dryRun) return dryRunResponse(request);
 
       const raw = await sendJsonRequest({
         config,
@@ -266,13 +256,7 @@ export function createConfluenceClient(options: ConfluenceClientOptions) {
         },
       };
 
-      if (input.dryRun) {
-        return {
-          ok: true,
-          dryRun: true,
-          data: request,
-        };
-      }
+      if (input.dryRun) return dryRunResponse(request);
 
       const raw = await sendJsonRequest({
         config,