feat(web): show full number below 10,000 instead of compact K suffix

[fengshao1227]

Summary

Display full numeric values for numbers below 10,000 instead of abbreviating them with the K suffix (e.g., 1200 instead of 1.2K). Numbers >= 10,000 continue to use K format as before.

Scope

• Frontend panel
• Manager Server
• CPA panel mode
• Full Docker mode
• Native packages / release
• Docs / Wiki
• CI / build / tooling

Changes

• Raise the K-suffix threshold from 1,000 to 10,000 in the canonical formatCompactNumber (usage.ts) by separating threshold from divisor
• Apply the same threshold change in two local duplicates (usageAnalyticsPresentation.ts, UsageAnalyticsPage.tsx)
• Update unit tests and component tests to match

User Impact

Token/usage values between 1,000–9,999 now display as full numbers (e.g., 1900 instead of 1.9K), making it easier to distinguish exact reasoning token counts.

Compatibility / Runtime Notes

• CPA panel mode: N/A
• Manager Server mode: N/A
• Full Docker / native packages: N/A

Data / Security Notes

N/A

Risk / Rollback

Risk level: Low

Rollback notes:

• Revert the single commit to restore the original 1,000 threshold

Verification

• Type check
• Lint
• Tests
• Build
• Manual UI check
• Docs/link check
• Not applicable, docs-only

Commands / evidence:

npm --workspace apps/web run test    # 82 passed, 673 tests
npm --workspace apps/web run type-check  # clean

Screenshots / Recordings

N/A — display-only formatting change

Docs

• README updated
• Wiki updated
• Release notes needed
• Not needed

Related

Closes #249