this.testIntentHistoryMaxChars = maxChars;
        }

        void testAddHistoryWithBudget(final LlmChatRequest request, final List<LlmMessage> history, final int budget) {
            addHistoryWithBudget(request, history, budget);
        }

        void testAddIntentHistory(final LlmChatRequest request, final List<LlmMessage> history) {
            addIntentHistory(request, history);
        }

        }
    }

    // --- Per-prompt-type parameter application ---

    /**
     * Applies per-prompt-type parameters to the request from configuration.
     * Reads temperature, max.tokens, and thinking.budget from config using
     * the pattern: {configPrefix}.{promptType}.{paramName}
     *
     * Subclasses can override to add provider-specific parameters (e.g. reasoning_effort, top_p).
     *

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