Hook registry: list installed hooks + call counts in Injection panel

Add a process-wide hook registry (hook/src/hook_registry) that every hook
module registers its hooks with and bumps a counter from each detour. The
XInput, focus-spoof, and audio render-hooks now register their individual
hooks (XInputGetState/Ex/Caps/SetState; GetForegroundWindow/GetActiveWindow/
GetFocus/WndProc guard; IMMDevice::Activate, IAudioClient::Initialize/
GetService, IAudioRenderClient::GetBuffer/ReleaseBuffer) and count calls.

The worker publishes the table to the host each tick over a new HookStatus
field (protocol v4 -> v5: HookEntry[] + count). The Injection panel shows it
as a collapsible table grouped by subsystem with an installed flag and call
count per hook; coop_audio_probe prints the same table headless.

Verified against Phantom Brave: 13 hooks listed with live counts (focus APIs
polled heavily, GetBuffer/ReleaseBuffer ticking with the audio render loop).
All four tests pass.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

hook/src/ipc_client.hpp

@@ -148,6 +148,26 @@ public:
 		}
 	}
 
+	// --- Hook registry -----------------------------------------------------
+
+	// Publish the installed-hooks table (name / subsystem / installed / calls).
+	void publish_hook_entries(const HookEntry* entries, std::uint32_t count)
+	{
+		if (block_ == nullptr)
+		{
+			return;
+		}
+		if (count > kMaxHookEntries)
+		{
+			count = kMaxHookEntries;
+		}
+		for (std::uint32_t i = 0; i < count; ++i)
+		{
+			block_->status.hook_entries[i] = entries[i];
+		}
+		block_->status.hook_entry_count = count;
+	}
+
 private:
 	SharedMemory shm_;
 	SharedBlock* block_ = nullptr;