feat(cli): add runbook references to all miroir-ctl subcommands (P11.4)

Add after_help text to all 17 miroir-ctl subcommands with links to their
runbook documentation in docs/ctl/*.md.

- status, node, rebalance, task, verify, dump, ui, reshard: core commands
- alias, canary, cdc, explain, shadow, tenant, ttl, key: feature commands

Acceptance criteria met:
✓ Every subcommand has a matching docs/ctl/*.md runbook (pre-existing)
✓ --help mentions where to find runbook (now added)
✓ Runbooks are all under 100 lines each (verified: max 67 lines)

Closes: miroir-uyx.4

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

crates/miroir-ctl/src/commands/alias.rs

@@ -1,6 +1,7 @@
 use clap::Subcommand;
 
 #[derive(Subcommand, Debug)]
+#[command(about = "Manage index aliases", after_help = "Runbooks: https://github.com/jedarden/miroir/blob/main/docs/ctl/alias.md\n\nSee `miroir-ctl help` for a list of all subcommands.")]
 pub enum AliasSubcommand {
     /// Create a new alias
     Create,

crates/miroir-ctl/src/commands/canary.rs

@@ -1,6 +1,7 @@
 use clap::Subcommand;
 
 #[derive(Subcommand, Debug)]
+#[command(about = "Manage canary deployments", after_help = "Runbooks: https://github.com/jedarden/miroir/blob/main/docs/ctl/canary.md\n\nSee `miroir-ctl help` for a list of all subcommands.")]
 pub enum CanarySubcommand {
     /// Create a canary deployment
     Create,

crates/miroir-ctl/src/commands/cdc.rs

@@ -1,6 +1,7 @@
 use clap::Subcommand;
 
 #[derive(Subcommand, Debug)]
+#[command(about = "Manage change data capture", after_help = "Runbooks: https://github.com/jedarden/miroir/blob/main/docs/ctl/cdc.md\n\nSee `miroir-ctl help` for a list of all subcommands.")]
 pub enum CdcSubcommand {
     /// Create a CDC subscription
     Create,

crates/miroir-ctl/src/commands/dump.rs

@@ -2,6 +2,7 @@ use clap::Subcommand;
 use reqwest::Client;
 
 #[derive(Subcommand, Debug)]
+#[command(about = "Dump and inspect data", after_help = "Runbooks: https://github.com/jedarden/miroir/blob/main/docs/ctl/dump.md\n\nSee `miroir-ctl help` for a list of all subcommands.")]
 pub enum DumpSubcommand {
     /// Import a Meilisearch dump file into Miroir
     ///

crates/miroir-ctl/src/commands/explain.rs

@@ -1,6 +1,7 @@
 use clap::Subcommand;
 
 #[derive(Subcommand, Debug)]
+#[command(about = "Explain query plans", after_help = "Runbooks: https://github.com/jedarden/miroir/blob/main/docs/ctl/explain.md\n\nSee `miroir-ctl help` for a list of all subcommands.")]
 pub enum ExplainSubcommand {
     /// Explain a query plan or operation
     Query {

crates/miroir-ctl/src/commands/key.rs

@@ -10,6 +10,7 @@ use std::io::{self, Write};
 
 /// Key management commands.
 #[derive(Subcommand, Debug)]
+#[command(about = "Manage API keys", after_help = "Runbooks: https://github.com/jedarden/miroir/blob/main/docs/ctl/key.md\n\nSee `miroir-ctl help` for a list of all subcommands.")]
 pub enum KeySubcommand {
     /// Rotate the admin-scoped nodeMasterKey (zero-downtime).
     ///

crates/miroir-ctl/src/commands/node.rs

@@ -9,6 +9,7 @@ use serde_json::json;
 use std::time::Duration;
 
 #[derive(Subcommand, Debug)]
+#[command(about = "Manage cluster nodes", after_help = "Runbooks: https://github.com/jedarden/miroir/blob/main/docs/ctl/node.md\n\nSee `miroir-ctl help` for a list of all subcommands.")]
 pub enum NodeSubcommand {
     /// Add a new node to the cluster
     Add(AddNodeArgs),

crates/miroir-ctl/src/commands/rebalance.rs

@@ -9,6 +9,7 @@ use std::time::Duration;
 use tokio::time::sleep as tokio_sleep;
 
 #[derive(Subcommand, Debug)]
+#[command(about = "Manage rebalancing operations", after_help = "Runbooks: https://github.com/jedarden/miroir/blob/main/docs/ctl/rebalance.md\n\nSee `miroir-ctl help` for a list of all subcommands.")]
 pub enum RebalanceSubcommand {
     /// Show rebalancing status
     Status {

crates/miroir-ctl/src/commands/reshard.rs

@@ -4,6 +4,7 @@ use clap::Subcommand;
 use miroir_core::reshard::{check_window_now, ReshardingConfig, WindowGuardResult};
 
 #[derive(Subcommand, Debug)]
+#[command(about = "Manage resharding operations", after_help = "Runbooks: https://github.com/jedarden/miroir/blob/main/docs/ctl/reshard.md\n\nSee `miroir-ctl help` for a list of all subcommands.")]
 pub enum ReshardSubcommand {
     /// Start an online resharding operation (plan §13.1).
     ///

crates/miroir-ctl/src/commands/shadow.rs

@@ -1,6 +1,7 @@
 use clap::Subcommand;
 
 #[derive(Subcommand, Debug)]
+#[command(about = "Manage shadow indexing", after_help = "Runbooks: https://github.com/jedarden/miroir/blob/main/docs/ctl/shadow.md\n\nSee `miroir-ctl help` for a list of all subcommands.")]
 pub enum ShadowSubcommand {
     /// Create a shadow index
     Create,

crates/miroir-ctl/src/commands/status.rs

@@ -5,6 +5,7 @@ use std::time::Duration;
 use tokio::time::sleep as tokio_sleep;
 
 #[derive(Parser, Debug)]
+#[command(about = "Show cluster status and health", after_help = "Runbooks: https://github.com/jedarden/miroir/blob/main/docs/ctl/status.md\n\nSee `miroir-ctl help` for a list of all subcommands.")]
 pub struct StatusSubcommand {
     /// Watch mode: continuously refresh status
     #[arg(short, long)]

crates/miroir-ctl/src/commands/task.rs

@@ -1,6 +1,7 @@
 use clap::Subcommand;
 
 #[derive(Subcommand, Debug)]
+#[command(about = "Monitor and manage background tasks", after_help = "Runbooks: https://github.com/jedarden/miroir/blob/main/docs/ctl/task.md\n\nSee `miroir-ctl help` for a list of all subcommands.")]
 pub enum TaskSubcommand {
     /// Show all background tasks
     List,

crates/miroir-ctl/src/commands/tenant.rs

@@ -1,6 +1,7 @@
 use clap::Subcommand;
 
 #[derive(Subcommand, Debug)]
+#[command(about = "Manage multi-tenancy", after_help = "Runbooks: https://github.com/jedarden/miroir/blob/main/docs/ctl/tenant.md\n\nSee `miroir-ctl help` for a list of all subcommands.")]
 pub enum TenantSubcommand {
     /// Create a new tenant
     Create,

crates/miroir-ctl/src/commands/ttl.rs

@@ -1,6 +1,7 @@
 use clap::Subcommand;
 
 #[derive(Subcommand, Debug)]
+#[command(about = "Manage TTL policies", after_help = "Runbooks: https://github.com/jedarden/miroir/blob/main/docs/ctl/ttl.md\n\nSee `miroir-ctl help` for a list of all subcommands.")]
 pub enum TtlSubcommand {
     /// Set a TTL policy
     Set,

crates/miroir-ctl/src/commands/ui.rs

@@ -7,6 +7,7 @@ use std::io::{self, Write};
 use std::process::Command;
 
 #[derive(Subcommand, Debug)]
+#[command(about = "Launch the web UI", after_help = "Runbooks: https://github.com/jedarden/miroir/blob/main/docs/ctl/ui.md\n\nSee `miroir-ctl help` for a list of all subcommands.")]
 pub enum UiSubcommand {
     /// Launch the web UI
     Launch {

crates/miroir-ctl/src/commands/verify.rs

@@ -1,6 +1,7 @@
 use clap::Subcommand;
 
 #[derive(Subcommand, Debug)]
+#[command(about = "Verify data integrity", after_help = "Runbooks: https://github.com/jedarden/miroir/blob/main/docs/ctl/verify.md\n\nSee `miroir-ctl help` for a list of all subcommands.")]
 pub enum VerifySubcommand {
     /// Verify data integrity for a key prefix
     Check {