User Upgrade One-Pager

Last Updated: 2026-02-28
Audience: End users, support, non-engineering stakeholders
Purpose: Understanding of system

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For Client / Non-Technical (quick read)

• The platform was upgraded to make conversations more stable, reliable, and consistent.
• Daily usage stays the same; there are no new steps required for normal chatting.
• Replies should now feel more predictable, with fewer random behavior shifts.
• Public and technical conversations stay professional; private/system conversations can stay more personal when relevant.
• If something looks wrong, share the time, account, and screenshot/error text so support can trace it quickly.
• Future updates now focus on maintenance quality and reliability, not risky structural changes.

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Quick announcement

• Architecture upgrade program is complete (Phase 0 to Phase 4).
• System behavior is now more stable and predictable across chat, tools, and background jobs.
• No user workflow changes are required for normal use.
• This release is now our operations baseline; future updates focus on maintenance hardening.
• Identity stabilization is now active: identity behavior is consistent across protocols with explicit public/tech/private/system rules.

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Improvements

• Responses are now more consistent because one system layer owns guardrail decisions.
• Background processing is now more reliable and durable.
• Memory retrieval quality is improved (better relevance and fewer missed keyword matches).
• Tool handling is more standardized and safer.
• Prompt limits are managed more predictably to reduce unstable behavior.
• Identity and protocol behavior are now clearer:
  • Public/tech/neutral modes suppress unnecessary Chinatsu mentions by policy.
  • Private/system modes allow natural Chinatsu anchor usage when relevant.
  • Prompt tool guidance now stays aligned with actual available tools (web_search + web_fetch).

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What may look different

• Some file-related actions now fail immediately with clear messages if the file is unsupported or too large.
• Similar questions should now produce more consistent behavior.
• Very long inputs may be trimmed more strictly to keep response quality stable.

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What users need to do

• No major workflow changes for normal chat use.
• If a file action fails, follow the error guidance (use supported type/size and retry).
• If protocol behavior feels unexpected, report which protocol mode was active (public/tech/neutral/private/system).
• Report unexpected behavior with:
  • time of issue
  • user/account
  • short prompt used
  • screenshot or error text

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What support teams should do

• Use this release as the new baseline for troubleshooting.
• Prefer focused verification checks instead of running all legacy tests.
• Ensure the latest protocol-scope migration is applied before validating prompt behavior.
• Escalate issues when:
  • queue-related errors persist
  • file jobs repeatedly fail in valid scenarios
  • responses become inconsistent for repeated same prompts

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Current program status

• Architecture upgrade phases are complete (Phase 0 through Phase 4).
• This release is now the stable operations baseline.
• Remaining work is maintenance-focused (no structural migration blockers remain).
• Identity Stabilization Closure is complete (code + tests + docs).

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What comes next (maintenance path)

• Keep the curated release gate mandatory for high-impact changes.
• Keep architecture boundary tests and anti-drift checks green.
• Keep reducing legacy env-drift in planned cleanup batches.
• Keep observability runbook and docs updated with each major change.

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Need the technical version?

See:

• USER-UPGRADE-OPERATIONS-GUIDE.md for full engineering details and standard process.
• OBSERVABILITY-RUNBOOK.md for incident diagnosis flow.
• SYSTEM-CLOSURE-DONE-DEFINITION.md for official closure status.
• IDENTITY-STABILIZATION-CLOSURE.md for identity-specific closure scope and validation probes.