DOC-7263 Fill missing client signatures in the command-API mapping

.claude/skills/command-api-mapping/SKILL.md

@@ -76,6 +76,35 @@ For each command in the set you're mapping:
    ```
    Spot-check one command in the rendered table if you can run the site.
 
+## Sweeping empty lists (DOC-7263)
+
+An empty list (`"redis_py": []`) renders "No method signature available for this client."
+A missing key renders the same text, so removing a key changes nothing on the page. The tab
+only lists the clients in `$clientOrder` in `api-methods-tab.html`: ioredis, RedisVL and
+Ruby never render, so filling them has no visible effect.
+
+Classify each empty (command, client) against the **released** client, not the file:
+
+- `real_gap`: a typed method exists but the mapping has no signature. Fill it.
+- `generic_only`: reachable only through `execute_command`, `call`, `Do`, `sendCommand`,
+  `executeRaw`, `redis::cmd` or container magic dispatch with no typed `@method`. Leave empty.
+- `unsupported`: no way to call it, the method throws or panics (`Quit`/`Sync` in go-redis,
+  `memory_doctor` in redis-py), it is `[Obsolete(error: true)]` (SE.Redis `SlaveOf`), or it
+  is client-side and sends no command (`SELECT` as `GetDatabase`, `CLUSTER KEYSLOT`).
+- Bare container rows (`ACL`, `CLIENT`, `CLUSTER`, `CONFIG`, `LATENCY`, `MEMORY`, `MODULE`,
+  `SLOWLOG`, `FUNCTION`, `SCRIPT`, `PUBSUB`) stay empty: the subcommand rows carry the
+  signatures. `HOTKEYS` is not one: check whether its subcommand files already exist.
+
+A name match is a hypothesis. Read the method, and check a sample of hits before trusting a
+count. Typed methods on a non-obvious receiver (`StatefulCmdable`, `IServer`, a `PubSub`
+object, a callback object) still count as `real_gap`: cite the receiver in your report.
+
+To fill many at once, write one fragment per client (`{command: [signatures]}`) outside the
+repo, verify every signature by compiling or reflecting against the released artifact, then
+apply with a script that replaces only lists that are currently `[]`, refuses any file that
+does not round-trip through `json.dumps(indent=2, ensure_ascii=False)`, and keeps each
+file's trailing whitespace. Assert the before and after empty counts.
+
 ## Guardrails
 
 - **Match the live client IDs exactly**, including `go-redis` (hyphen) and `node_redis`,

.claude/skills/command-api-mapping/reference/client-quirks.md

@@ -151,6 +151,32 @@ Translation rules:
 - Return type is generally `RedisResult<T>` (sync) / a future of it (async).
 - `///` doc comments → descriptions when present.
 
+## Receivers that aren't the obvious client (DOC-7263)
+- **redis_py:** `cluster_*` methods exist only on `RedisCluster`; subscribe methods are on the
+  `PubSub` object (`r.pubsub()`); FT.HYBRID is `r.ft(...).hybrid_search`. Some methods are
+  stubs that raise `NotImplementedError`. Read the body, not the name.
+- **node_redis:** `select`, `quit`, `reset`, `monitor` and the subscribe family are methods on
+  `RedisClient`, not command files, and are `undefined` on a cluster client. `LOLWUT` is
+  registered uppercase only. Commands in `@redis/search` and similar need that package.
+- **go-redis:** `CLIENT SETINFO` and `HELLO` are on `StatefulCmdable`/`*Conn`, not `Cmdable`.
+  `HotKeys*` is on `*Client` only. `Monitor` is on the `cmdable` struct but not the
+  `Cmdable` interface. Subscribe methods return `*PubSub`; unsubscribe is on `*PubSub`.
+- **jedis:** `cluster*` methods are on `Jedis` only (not `UnifiedJedis` or `RedisClient`).
+  `unsubscribe`/`punsubscribe`/`sunsubscribe` are on the callback objects
+  (`JedisPubSubBase`, `JedisShardedPubSubBase`), `ssubscribe`/`spublish` on the cluster clients.
+- **lettuce:** subscribe methods are on the pub/sub connection interfaces. `RediSearchCommands`
+  takes only `K` (no `V`).
+- **nredisstack:** server commands are on `IServer` (`FooAsync` twins), subscribe on
+  `ISubscriber`, sharded pub/sub through `RedisChannel.Sharded(...)`. `Save(SaveType)` covers
+  SAVE, BGSAVE and BGREWRITEAOF.
+- **php (predis):** a container subcommand reached only through `__call` (no `@method` in
+  `src/Command/Container/*.php`) is `generic_only`, not a typed method. Consumer methods
+  (`pubSubLoop()`) are the typed home for PSUBSCRIBE/PUNSUBSCRIBE.
+- **redis_rs:** methods come from `implement_commands!` and are generated for four traits.
+  `HotkeysCommands`/`AsyncHotkeysCommands` are separate traits. Some methods need a feature
+  (`acl`, `script` default on; `search_unfinished` is not stable). Async cluster connections
+  carry SSUBSCRIBE/SUNSUBSCRIBE.
+
 ## General
 - **Never invent descriptions.** Empty string beats a plausible-but-unverified sentence.
 - **Confirm the command exists** in the client before adding it; preview commands may be