fix: correct Abiba platform label (pi not openclaw), add plugin skeletons, shared config, fix health port

- Replace all 'openclaw' references with 'pi' (pi coding harness)
- Fix Git remote URL in CONTEXT.md
- Harmonize health port to 9200 across all docs
- Add config.yaml.example with full schema
- Add pi-zulip-extension skeleton (TypeScript, pi Extension API)
- Add hermes-zulip-plugin skeleton (Python, BasePlatformAdapter)
- Add agent-zero-plugin skeleton (Python, A0 plugin API)
- Update ADR-007 with pi extension docs reference
- Document private topic ACL v1 limitation in CONTEXT.md

config.yaml.example

@@ -0,0 +1,30 @@
+# config.yaml.example — Shared configuration schema for all 3 platform plugins
+# Copy to config.yaml and fill in per-agent values. Do NOT commit config.yaml.
+#
+# Fields marked ${ENV_VAR} should be set from environment variables.
+# All fields are required unless marked (optional).
+
+agent:
+  name: "tanko"                    # Agent name (lowercase, no spaces)
+  display_name: "Tanko"            # Human-readable display name
+  zulip_bot_name: "tanko-bot"     # Zulip bot username (ADR-003 naming)
+  owner_email: "jerome@sysloggh.net"  # Human owner for private topic ACL
+  private_topic: "tanko-private"   # Private topic name (ADR-001 naming)
+
+zulip:
+  server_url: "https://chat.sysloggh.net"
+  email: "tanko-bot@chat.sysloggh.net"
+  api_key: "${ZULIP_API_KEY}"      # Zulip bot API key — use env var, never hardcode
+  stream: "agent-hub"              # Zulip stream for agent communication
+  all_bots_user_id: 1234           # User ID of the "All Bots" bot (ADR-006)
+
+error_handling:
+  timeout_seconds: 30              # Max wait for agent response
+  retry_count: 3                   # Retry attempts before graceful degradation
+  retry_delay_seconds: 5           # Delay between retries
+  graceful_message: "{{agent_name}} is processing your request — please wait..."
+
+monitoring:
+  health_endpoint_enabled: true
+  health_port: 9200                # Health check HTTP port (all platforms)
+  log_level: "INFO"                # DEBUG, INFO, WARNING, ERROR