move tokens to config part 2

RETRIEX_PROMPT_CONFIG_FIX_README.md

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+# RetrieX Prompt Config Centralization Fix
+
+This patch centralizes PromptBuilder wording and label configuration in `config/retriex/prompt.yaml` while keeping the previous PHP defaults as fallbacks.
+
+Changed files:
+
+- `config/retriex/prompt.yaml`
+- `src/Config/PromptBuilderConfig.php`
+
+Scope:
+
+- Section labels
+- Conversation context intro lines
+- Live shop result prompt rules
+- Output priority rules
+- Response format rules
+- Language rules
+- Fact grounding rules
+- Retrieved knowledge / URL source labels
+- Shop result field labels
+- Technical product model pattern
+
+Intentionally unchanged:
+
+- Main active system prompt from the database
+- Retrieval logic
+- Shop search logic
+- Vocabulary / intent / agent config logic
+- PromptBuilderConfig keyword detection, which remains backed by `vocabulary.yaml`
+
+After applying:
+
+1. Clear Symfony cache.
+2. Run the known 1.4.2 regression prompts.
+3. Verify that generated prompt sections remain identical to the previous behavior.