chore: lint shared/ folder

[raivieiraadriano92]

Cherry-picks the chore: lint shared/ folder commit (339c1ea9) from #1168 onto main as a standalone change.

Applies ESLint to the shared/ folder: adds the lint config wiring in eslint.config.js/package.json and applies the resulting autofixes across shared/agent-core, shared/ip-classification, shared/url, and a few src/ consumers.

Notably renames the exported constant APP_HARNESS_ENVIRONMENT_PROMPT → appHarnessEnvironmentPrompt and updates all call sites.

Conflict resolution

One conflict in src/ai/prompt.test.ts: main had added a widgetRegistry import alongside the old APP_HARNESS_ENVIRONMENT_PROMPT name. Resolved by keeping the widgetRegistry import and using the renamed appHarnessEnvironmentPrompt. All other references to the old name across the tree were updated by the commit.

🤖 Generated with Claude Code

[github-actions]

Semgrep Security Scan

No security issues found.

[github-actions]

Preview environment destroyed 🧹

Stack preview-pr-1169 and its Cloudflare subdomain have been cleaned up.

[github-actions]

PR Metrics

Metric	Value
Lines changed (prod code)	+256 / -119
JS bundle size (gzipped)	🟢 585.4 KB → 585.2 KB (-161 B, -0.0%)
Test coverage	🟢 81.00% → 81.00% (+0.0%)
Performance (preview)	Preview not ready — Render deploy may have timed out
Accessibility	—
Best Practices	—
SEO	—

Updated Thu, 30 Jul 2026 13:11:26 GMT · run #2514

[github-actions]

🔭 thunder-deep-review (advisory)

Reviewed the diff — no issues to report. ✅ Never approves, never requests changes, never gates merge.
_{head: 8f6cf0d4d879 · mode: deep · deferred 0 item(s) already reported by other bots (best-effort dedup)}