chore(deps): bump nanoid overrides to 3.3.18

[santoshkumarradha]

Summary

• bump the explicit nanoid overrides in the web client and rag evaluation UI from 3.3.17 to 3.3.18
• regenerate the npm and pnpm lockfiles that resolve through postcss
• clear Dependabot alerts [TS SDK] Add tests for client/AgentFieldClient.ts #405, [TS SDK] Add tests for utils (pattern, schema, httpAgents) #406, and [Control Plane] Add tests for handlers/ui — dashboard + nodes #408 without changing application code

Validation

• cd control-plane/web/client && npm audit --json
• cd control-plane/web/client && pnpm install --lockfile-only
• cd examples/python_agent_nodes/rag_evaluation/ui && npm audit --json
• cd examples/python_agent_nodes/rag_evaluation/ui && npm run build
• cd control-plane/web/client && pnpm test (fails on current main because date-fns is imported but not declared in the workspace; unrelated to this change)

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[github-actions]

📊 Coverage gate

Thresholds from .coverage-gate.toml: per-surface ≥ 84%, aggregate ≥ 85%, max per-surface regression ≤ 1.0 pp, max aggregate regression ≤ 0.50 pp.

Surface	Current	Baseline	Δ
control-plane	87.10%	87.40%	↓ -0.30 pp	🟡
sdk-go	92.70%	92.00%	↑ +0.70 pp	🟢
sdk-python	94.20%	93.73%	↑ +0.47 pp	🟢
sdk-typescript	91.17%	90.42%	↑ +0.75 pp	🟢
web-ui	84.76%	84.79%	↓ -0.03 pp	🟡
aggregate	85.62%	85.75%	↓ -0.13 pp	🟡

✅ Gate passed

No surface regressed past the allowed threshold and the aggregate stayed above the floor.

[github-actions]

📐 Patch coverage gate

Threshold: 80% on lines this PR touches vs origin/main (from .coverage-gate.toml:thresholds.min_patch).

Surface	Touched lines	Patch coverage	Status
control-plane	0	—	➖ no changes
sdk-go	0	—	➖ no changes
sdk-python	0	—	➖ no changes
sdk-typescript	0	—	➖ no changes
web-ui	0	—	➖ no changes

✅ Patch gate passed

Every surface whose lines were touched by this PR has patch coverage at or above the threshold.