third step

RETRIEX_INTENT_LIGHT_SALES_YAML_ONLY_PATCH_README.md

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+# RetrieX Patch 3: IntentLight + SalesIntent YAML-only
+
+This patch continues the incremental YAML-source-of-truth migration.
+
+## Scope
+
+Only these intent areas are changed:
+
+- `IntentLightConfig`
+- `SalesIntentConfig`
+- direct usages of their former PHP constants
+- the effective-config dump for these values
+- `config/retriex/intent.yaml`
+
+No retrieval, prompt, shop, commerce-parser, SSE, or answer-generation logic is changed.
+
+## What changed
+
+### IntentLightConfig
+
+Removed PHP defaults:
+
+- `LIST_THRESHOLD`
+- `QUANTITY_WORDS`
+- `STRONG_PATTERNS`
+
+Added required YAML-backed accessors:
+
+- `getListThreshold()`
+- `getQuantityWords()`
+- `getStrongPatterns()`
+
+The previous values now live in:
+
+```yaml
+retriex.intent.light.config:
+  list_threshold: 4
+  quantity_words: [...]
+  strong_patterns: [...]
+```
+
+### SalesIntentConfig
+
+Removed PHP defaults:
+
+- `DOMINANCE_DELTA`
+- `MIN_SCORE_THRESHOLD`
+- `SALES_SIGNALS`
+- `COMPARISON_SIGNALS`
+- `OBJECTION_SIGNALS`
+- `IMPLEMENTATION_SIGNALS`
+- `ROI_SIGNALS`
+
+Added required YAML-backed accessors:
+
+- `getDominanceDelta()`
+- `getMinScoreThreshold()`
+- `getSalesSignals()`
+- `getComparisonSignals()`
+- `getObjectionSignals()`
+- `getImplementationSignals()`
+- `getRoiSignals()`
+
+The previous values now live in:
+
+```yaml
+retriex.intent.sales.config:
+  dominance_delta: 2
+  min_score_threshold: 3
+  sales_signals: [...]
+  comparison_signals: [...]
+  objection_signals: [...]
+  implementation_signals: [...]
+  roi_signals: [...]
+```
+
+## Validation performed
+
+Static validation in the patch workspace:
+
+```bash
+php -l src/Config/IntentLightConfig.php
+php -l src/Config/SalesIntentConfig.php
+php -l src/Intent/IntentLite.php
+php -l src/Intent/SalesIntentLite.php
+php -l src/Config/RetriexEffectiveConfigProvider.php
+```
+
+YAML was parsed successfully with the new keys.
+
+The full Symfony regression commands were not executed in the extracted ZIP workspace because `vendor/` is not part of the uploaded archive.