fix: resolve ConfigurationManager API method calls in Issue #37 tests

Fix TestEmojiConfiguration test errors by updating method calls to match
actual ConfigurationManager API signatures:
- get_config() → get_current_config()
- get_environment_variables() → _get_relevant_env_vars()

All 28 Issue #37 tests now pass successfully, completing emoji flag
integration with configuration system implementation.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

cost_notes/issue_037_cost_2025-10-06.md

@@ -0,0 +1,73 @@
+---
+note_type: "issue_cost_tracking"
+issue_id: 37
+issue_title: "Emoji flag integration with configuration system"
+session_date: "2025-10-06"
+claude_model: "claude-sonnet-4"
+total_cost_eur: 0.0952
+total_cost_usd: 0.1035
+total_tokens: 13700
+generated_at: "2025-10-06T18:03:29.674708"
+---
+
+# Issue #37 Implementation Cost
+**Issue**: Emoji flag integration with configuration system
+**Date**: 2025-10-06
+**Claude Model**: claude-sonnet-4
+
+## Cost Summary
+- **Total Cost**: €0.0952 ($0.1035 USD)
+- **Token Usage**: 13,700 tokens
+- **Input Tokens**: 8,500 tokens @ $3.00/M
+- **Output Tokens**: 5,200 tokens @ $15.00/M
+
+## Cost Breakdown
+
+| Component | Tokens | Rate ($/M) | Cost (USD) | Cost (EUR) |
+|-----------|--------|------------|------------|------------|
+| Input | 8,500 | $3.00 | $0.0255 | €0.0235 |
+| Output | 5,200 | $15.00 | $0.0780 | €0.0718 |
+| **Total** | 13,700 | - | $0.1035 | €0.0952 |
+
+## Implementation Summary
+Implemented comprehensive TDD8 workflow for emoji flag functionality integration with configuration system. Fixed ConfigurationManager API method calls in test suite. All 28 tests passing including 10 configuration integration tests.
+
+## Cost Allocation
+This cost has been allocated to the 'AI & ML Services' category as a one-time expense for issue #37 implementation.
+
+## Notes
+- Currency conversion rate: 1 USD = 0.920 EUR
+- Pricing based on claude-sonnet-4 rates as of 2025-10-06
+- Token counts and costs are estimates based on session usage
+
+<!--
+contentmatter:
+{
+  "cost_tracking": {
+    "issue": {
+      "id": 37,
+      "title": "Emoji flag integration with configuration system",
+      "implementation_date": "2025-10-06"
+    },
+    "session": {
+      "model": "claude-sonnet-4",
+      "token_usage": {
+        "input_tokens": 8500,
+        "output_tokens": 5200,
+        "total_tokens": 13700
+      },
+      "costs": {
+        "input_cost_usd": 0.0255,
+        "output_cost_usd": 0.078,
+        "total_cost_usd": 0.1035,
+        "total_cost_eur": 0.0952,
+        "conversion_rate": 0.92
+      },
+      "pricing_rates": {
+        "input_per_million": 3.0,
+        "output_per_million": 15.0
+      }
+    }
+  }
+}
+-->