docs: add README for every subdirectory

33 agent READMEs, 14 hand READMEs, 2 plugin READMEs
(echo-memory + hooks), and 2 skill READMEs
(custom-skill-prompt + custom-skill-python).

Each README documents the component's purpose, configuration,
and usage based on its TOML definition.

hands/devops/README.md

@@ -0,0 +1,32 @@
+# DevOps Hand
+
+Autonomous DevOps engineer -- CI/CD management, infrastructure monitoring, deployment automation, and incident response.
+
+## Configuration
+
+| Field | Value |
+|-------|-------|
+| Category | `development` |
+| Agent | `devops-hand` |
+| Routing | `ci/cd`, `pipeline`, `github actions`, `infrastructure monitoring`, `deployment automation`, `incident response` |
+
+## Integrations
+
+None required.
+
+## Settings
+
+- **Infrastructure Type** -- `cloud`, `kubernetes`, `docker`, `bare_metal`, `serverless`
+- **CI/CD Platform** -- `github_actions`, `gitlab_ci`, `jenkins`, `circleci`, `other`
+- **Monitoring Focus** -- `uptime`, `performance`, `security`, `cost`, `balanced`
+- **Auto Monitor** -- Automatically monitor infrastructure (default: off)
+- **Health Check Interval** -- `1min`, `5min`, `15min`, `1hour`
+- **Service URLs** -- Comma-separated URLs to monitor
+- **Alert on Failure** -- Publish events on health check failures (default: on)
+- **Rollback Strategy** -- `manual`, `auto_previous`, `blue_green`
+
+## Usage
+
+```bash
+librefang hand run devops
+```