docs(opencode): add implementation plan, integration guide updates, and peer review consensus reports

.mam.env.example

@@ -98,6 +98,17 @@
 #default: (unset → reads ~/.grok/auth.json)
 # XAI_API_KEY=replace_me
 
+# Optional multi-provider API keys for OpenCode CLI (if ~/.local/share/opencode/auth.json is not present).
+#default: (unset → reads ~/.local/share/opencode/auth.json)
+# ANTHROPIC_API_KEY=replace_me
+# OPENAI_API_KEY=replace_me
+# GEMINI_API_KEY=replace_me
+# GROQ_API_KEY=replace_me
+
+# Optional inline JSON permissions configuration for OpenCode.
+#default: (unset → defaults to --auto CLI bypass)
+# OPENCODE_PERMISSION='{"*":"allow"}'
+
 # Retention period (days) for delegate-job event logs.
 #default: 7
 # MAM_EVENT_RETENTION_DAYS=7