feat(WebUI): Explorer action toolbar + context menu enablement (#2849)

[natechadwick-intsof]

Summary

Implements #2849 (slice 2 of #2407 / grandparent #2400): product Explorer server action toolbar + item/folder context menu composition from existing rest/actions, with client-side enablement helpers that hide desktop-only / non-web-executable actions and route CONTEXTMENU roots to the popup only.

Changes

• actionEnablement.ts: pure helpers (filterToolbarActions / filterContextMenuActions, desktop URL detection, CLIENT sentinel handling, surface rules).
• ContentExplorerShell: apply enablement after catalog + workflow merge; load full cascading tree for folder context (drop item=true which only kept flat MENUITEM roots).
• Vitest: actionEnablement.test.ts (11) + shell test for toolbar filter + context-menu mount.
• Playwright: us1-core-explorer asserts toolbar + right-click context menu when rows exist.
• product-docs: new Content Explorer admin page + index/sites links.

Out of scope (unchanged)

• New action types, clipboard multi-select ([8.2] #2400 slice: Explorer multi-select + clipboard in product shell #2408), search panel (issue 2407 slice 3: Search panel toggle + Playwright Explorer shell chrome #2850).

Parent / slices

Issue	Role
#2400	Grandparent DCE parity epic
#2407	Parent shell composition
#2849	This PR (slice 2)
#2848	Slice 1 display formats (done)
#2850	Slice 3 search + Playwright chrome

Test plan

• cd WebUI && ../mvnw.cmd clean install — BUILD SUCCESS
• Vitest full suite: 1783 passed (incl. 11 enablement + shell issue 2407 slice 2: Server action toolbar + context menu in Explorer shell #2849)
• Java Surefire: 37 tests, Failures: 0
• Playwright us1-core-explorer against QA H2 when available (assertions added)

Product documentation

• Updated pages under product-docs/ (8.2/admin/content-explorer.md, admin index, sites related link)

Build evidence (C3)

• modules_built: WebUI
• build_evidence: cd WebUI; ..\mvnw.cmd clean install → BUILD SUCCESS; Vitest Tests 1783 passed; Surefire Failures: 0
• downstream_checked: none (no public Java API / final / signature change; WebUI TS + product-docs + Playwright only)

Operator

Operator: Grok: night-issue-prs (model grok-4.5)

Fixes #2849

Co-Authored by Grok Build using grok-4.5 with agent main.

[natechadwick-intsof]

Human QA handoff: #2856 (@vijaya-boddipudi)

Co-Authored by Grok Build using grok-4.5 with agent main.

[kilo-code-bot]

Code Review Summary

Status: No Issues Found | Recommendation: Merge

Files Reviewed (1 file)

• modules/perc-qa-automation/frontend/tests/us1-core-explorer.spec.js - previous enablement-filtering assertion gap addressed; no new issues in changed lines

Previous Review Summary (commit 64dfc6b)

Current summary above is authoritative. Previous snapshots are kept for context only.

Previous review (commit 64dfc6b)

Status: 1 Issue Found | Recommendation: Address before merge

Overview

Severity	Count
CRITICAL	0
WARNING	0
SUGGESTION	1

Issue Details (click to expand)

SUGGESTION

File	Line	Issue
modules/perc-qa-automation/frontend/tests/us1-core-explorer.spec.js	99	Playwright test does not assert enablement filtering behavior in the live-CMS path; only toolbar mount and context-menu presence are verified. Consider adding a filtered-state assertion when the catalog supports it.

Files Reviewed (9 files)

• WebUI/src/main/ts/contentExplorer/ContentExplorerShell.tsx - enablement filtering integration
• WebUI/src/main/ts/contentExplorer/actionEnablement.ts - new enablement helpers
• WebUI/src/test/ts/contentExplorer/ContentExplorerShell.test.tsx - shell integration test
• WebUI/src/test/ts/contentExplorer/actionEnablement.test.ts - new unit tests
• WebUI/src/test/ts/contentExplorer/index.ts - test index update
• modules/perc-qa-automation/frontend/tests/us1-core-explorer.spec.js - Playwright coverage
• product-docs/8.2/admin/content-explorer.md - new docs page
• product-docs/8.2/admin/index.md - nav link
• product-docs/8.2/admin/sites.md - related link

Fix these issues in Kilo Cloud

---

_{Reviewed by step-3.7-flash · Input: 51K · Output: 5.4K · Cached: 262.5K}

_{Review guidance: REVIEW.md from base branch main}