Finalize render documentation across operations, integrations, troubleshooting, and roadmap status

docs/troubleshooting.md

@@ -217,6 +217,33 @@ Safe fix:
 - correct publish source/destination rules;
 - retry after storage failure is resolved.
 
+## Render markdown source missing
+
+Symptom:
+
+- analyze or publish fails because `narratio.transcript.final_markdown` or `narratio.transcript.final_trimmed_markdown` is unavailable.
+
+Likely causes:
+
+- render stage was not executed after transcript changes;
+- render stage failed before producing canonical markdown outputs.
+
+Diagnostics:
+
+```bash
+narratio session status 2026-04-04
+narratio run-stage render 2026-04-04 --force
+```
+
+Safe fix:
+
+- rerun render and then retry downstream stage(s):
+
+```bash
+narratio run-stage render 2026-04-04 --force
+narratio run-stage analyze 2026-04-04 --force
+```
+
 ## Secrets or storage credential failure
 
 Symptom: