Docs: added brief explainer on hooks in Common Pitfalls, removed section on tool-loading in Claude Code

Author: MischaPanch

docs/02-usage/030_clients.md

@@ -40,10 +40,15 @@ A key mechanism for this is to use the appropriate [context](#contexts) when sta
 (clients-common-pitfalls)=
 ### Common Pitfalls
 
-**Discoverability of the `serena`**.
+**Discoverability of the `serena` command**.
 Your client may not find the `serena` CLI command, even if it is on your system PATH.
 In this case, a workaround is to provide the full path to the `serena` executable.
 
+**Serena's tools not being used**.
+With some clients, you may experience that Serena's tools are not being used.
+This is mainly due to problems in the client itself (like a poorly implemented tool discovery). To counteract this,
+Serena comes with a set of commands that can be used in _hooks_. See the sections on hooks for Claude Code and VSCode below.
+
 **Environment Variables**.
 Some language servers may require additional environment variables to be set (e.g. F# on macOS with Homebrew),
 which you may need to explicitly add to the MCP server configuration.
@@ -117,22 +122,6 @@ Confirm that Claude Code is connected to Serena by running the `/mcp` command an
 If Serena fails to start fast enough, you should set `MCP_TIMEOUT` to a sufficiently high value
 (e.g. by adding `export MCP_TIMEOUT=60000` to your shell profile)
 
-**Maximum Token Efficiency.** To maximize token efficiency, you may want to use Claude Code's 
-*on-demand tool loading* feature, which is supported since at least v2.0.74 of Claude Code.
-This feature avoids sending all tool descriptions to Claude upon startup, thus saving tokens.
-Instead, Claude will search for tools as needed (but there are no guarantees that it will 
-search optimally, of course).
-To enable this feature, set the environment variable `ENABLE_TOOL_SEARCH=true`.  
-Depending on your shell, you can also set this on a per-session basis, e.g. using
-```shell
-ENABLE_TOOL_SEARCH=true claude
-```
-in bash/zsh, or using
-```shell
-set ENABLE_TOOL_SEARCH=true && claude
-```
-in Windows CMD to launch Claude Code.
-
 **Hooks.**
 Due to recent changes (especially dynamic tool loading) in Claude Code, the agent will often fail to make proper use
 of Serena's tools, either by failing to load them in the beginning or by forgetting the instructions in a long session