fix: enforce internal embeddings contract

.superpowers/sdd/2026-08-08-internal-qdrant-ollama/task-4-report.md

@@ -90,3 +90,60 @@ git diff --check
 - the focused harness verification still emits two pre-existing warnings:
   - `DeprecationWarning` from `testcontainers.postgres`
   - `FutureWarning` because `resources` currently flows through the legacy config translation path
+
+## Fix round 1 — 2026-08-08
+
+### Findings addressed
+
+- HIGH: external top-level `embeddings` remained an operational fallback and could still load
+- MEDIUM: non-object embed JSON payloads escaped as raw `AttributeError`
+
+### RED evidence
+
+Command:
+
+```bash
+cd harness
+./.venv/bin/pytest tests/test_internal_embeddings.py tests/test_config_resources.py tests/test_ollama_ensure.py -q
+```
+
+Observed before the fix:
+
+- exit code `1`
+- `2 failed, 36 passed, 2 warnings`
+
+Representative failures:
+
+- `AttributeError: 'list' object has no attribute 'get'` from `response.json()` returning a JSON array
+- `Failed: DID NOT RAISE ConfigError` for top-level external `embeddings.provider=openai_compatible`
+
+### GREEN evidence
+
+Command:
+
+```bash
+cd harness
+./.venv/bin/pytest tests/test_internal_embeddings.py tests/test_config_resources.py tests/test_ollama_ensure.py -q
+```
+
+Observed after the fix:
+
+- exit code `0`
+- `38 passed, 2 warnings`
+
+Touched-file lint:
+
+```bash
+cd harness
+./.venv/bin/ruff check tht/config.py tht/vectorstore/embeddings.py tests/test_internal_embeddings.py tests/test_config_resources.py
+```
+
+- exit code `0`
+- `All checks passed!`
+
+### Minimal fix
+
+- validated the final active `cfg.embeddings` contract after config loading, so legacy top-level
+  embedding inputs now fail explicitly unless they exactly match the internal Ollama contract
+- converted non-mapping embed JSON payloads into controlled `EmbeddingsError` failures with
+  sanitized diagnostics instead of raw attribute errors