AI/Tasks/CurrentTask.txt

Your task is to implement full support for OpenAI GPT-5.3-Codex reasoning
effort modes in the TechToolbox.Agent codebase.
 
Target directory:
C:\repos\TechToolbox\src\TechToolbox.Agent
 
Reasoning effort modes to support:
    low
    medium
    high
    xhigh
 
These correspond to the "reasoning.effort" field in the /v1/responses API.
 
You MUST perform the following actions:
 
1. Modify AgentConfiguration.cs to add:
   - ReasoningEffortOverride (string? or enum)
   - EnableReasoningEffortAuto (bool)
   - EffectiveReasoningEffort (string? or enum)
 
2. Modify the PowerShell/CLI parameter ingestion layer so the user may
   specify:
   - -ReasoningEffort <low|medium|high|xhigh>
   - -ReasoningEffortAuto (switch)
 
3. Implement a new policy method in AgentOrchestrator.cs:
   ResolveReasoningEffort(AgentConfiguration config)
   This method must:
   - Respect explicit override
   - Use auto mode when override is absent
   - Map preflight score to effort level
   - Optionally incorporate ThinkingMode
   - Store the final value in config.EffectiveReasoningEffort
 
4. Modify OpenAiCompatibleLlmClient.cs so that the Responses API payload
   includes:
       reasoning: { effort: "<value>" }
   ONLY when provider=openai AND model=gpt-5.3-codex AND effort is non-null.
 
5. Ensure the reasoning effort value is threaded through the entire call
   chain:
   - AgentOrchestrator → LLM client → BuildPayload → SendRequestAsync
 
6. Add diagnostics:
   - Selected reasoning effort
   - Whether override or auto was used
   - Whether the field was emitted to the payload
 
7. Add guardrails:
   - If provider/model does not support reasoning effort, omit the field
     and log a diagnostic.
 
8. For EVERY file you modify, you MUST output a WRITE-FILE block with:
   - The full absolute path
   - The complete updated file contents
   - No placeholders
   - No partial patches
   - No diff format
   - The entire file rewritten exactly as it should exist on disk
 
   Example format:
   WRITE-FILE
   Path: C:\repos\TechToolbox\src\TechToolbox.Agent\Configuration\AgentConfiguration.cs
   <full updated file contents here>
 
9. After all WRITE-FILE blocks, output a final markdown summary describing:
   - All files modified
   - All new fields added
   - The reasoning-effort policy
   - The payload changes
   - Any new parameters
   - Any new diagnostics
   - Confirmation that GPT-5.3-Codex reasoning effort is now implemented.
 
This task is complete only when:
- All modified files have been emitted via WRITE-FILE blocks
- The codebase is fully updated
- The markdown summary reflects the completed implementation