agents: set reasoningEffort per profile; rename thinkingBudget tag

Reasoning effort is part of an agent's behavior definition, so set it
on all 14 profiles keyed to role (planning/review high, general medium,
lightweight assist low). Also rename the ThinkingBudget json tag from
the confusing bare "reasoning" to "thinkingBudget", distinct from the
reasoningEffort string knob. No config migration needed — no profile or
backends.conf used the old "reasoning" key.

cmd/olliesrv/internal/backend/backend.go

@@ -154,7 +154,7 @@ type GenerationParams struct {
 	FrequencyPenalty    *float64 `json:"frequencyPenalty,omitempty"`
 	PresencePenalty     *float64 `json:"presencePenalty,omitempty"`
 	RepetitionPenalty   *float64 `json:"repetitionPenalty,omitempty"`
-	ThinkingBudget      int      `json:"reasoning,omitempty"`
+	ThinkingBudget      int      `json:"thinkingBudget,omitempty"`
 	ReasoningEffort     string   `json:"reasoningEffort,omitempty"`
 	IncludeReasoning    *bool    `json:"includeReasoning,omitempty"`
 	ResponseFormat      string   `json:"responseFormat,omitempty"`

data/agents/author.json

@@ -30,5 +30,6 @@
     "lsp_diagnostics"
   ],
   "temperature": 0.3,
-  "maxTokens": 16384
+  "maxTokens": 16384,
+  "reasoningEffort": "medium"
 }

data/agents/conductor.json

@@ -28,5 +28,6 @@
     "lsp_diagnostics"
   ],
   "temperature": 0.3,
-  "maxTokens": 16384
+  "maxTokens": 16384,
+  "reasoningEffort": "high"
 }

data/agents/copilot.json

@@ -26,5 +26,6 @@
     "lsp_diagnostics"
   ],
   "temperature": 0.3,
-  "maxTokens": 8192
+  "maxTokens": 8192,
+  "reasoningEffort": "low"
 }

data/agents/default.json

@@ -33,5 +33,6 @@
     "lsp_symbols"
   ],
   "temperature": 0.5,
-  "maxTokens": 16384
+  "maxTokens": 16384,
+  "reasoningEffort": "medium"
 }

data/agents/driver.json

@@ -44,5 +44,6 @@
   "backend": "openrouter",
   "model": "deepseek/deepseek-v4-flash",
   "temperature": 0.4,
-  "maxTokens": 16384
+  "maxTokens": 16384,
+  "reasoningEffort": "high"
 }

data/agents/explorer.json

@@ -26,5 +26,6 @@
     "lsp_diagnostics"
   ],
   "temperature": 0.3,
-  "maxTokens": 16384
+  "maxTokens": 16384,
+  "reasoningEffort": "medium"
 }

data/agents/foreman.json

@@ -17,5 +17,6 @@
     "file_grep"
   ],
   "temperature": 0.3,
-  "maxTokens": 16384
+  "maxTokens": 16384,
+  "reasoningEffort": "high"
 }

data/agents/librarian.json

@@ -17,5 +17,6 @@
     "codebase_overview"
   ],
   "temperature": 0.3,
-  "maxTokens": 16384
+  "maxTokens": 16384,
+  "reasoningEffort": "medium"
 }

data/agents/navigator.json

@@ -26,5 +26,6 @@
     "lsp_diagnostics"
   ],
   "temperature": 0.3,
-  "maxTokens": 8192
+  "maxTokens": 8192,
+  "reasoningEffort": "low"
 }

data/agents/observer.json

@@ -23,5 +23,6 @@
     "lsp_diagnostics"
   ],
   "temperature": 0.3,
-  "maxTokens": 4096
+  "maxTokens": 4096,
+  "reasoningEffort": "low"
 }

data/agents/panelist.json

@@ -27,5 +27,6 @@
     "lsp_diagnostics"
   ],
   "temperature": 0.7,
-  "maxTokens": 16384
+  "maxTokens": 16384,
+  "reasoningEffort": "medium"
 }

data/agents/reviewer.json

@@ -27,5 +27,6 @@
     "lsp_diagnostics"
   ],
   "temperature": 0.5,
-  "maxTokens": 16384
+  "maxTokens": 16384,
+  "reasoningEffort": "high"
 }

data/agents/taskmanager.json

@@ -19,5 +19,6 @@
     "file_grep"
   ],
   "temperature": 0.3,
-  "maxTokens": 8192
+  "maxTokens": 8192,
+  "reasoningEffort": "low"
 }

data/agents/theo.json

@@ -26,5 +26,6 @@
     "lsp_diagnostics"
   ],
   "temperature": 0.3,
-  "maxTokens": 8192
+  "maxTokens": 8192,
+  "reasoningEffort": "low"
 }