docs: Add channel chat log

5 files changed, 209 insertions, 19 deletions

diff --git a/docs/src/en/guide/admin/introduction-channel-chat.md b/docs/src/en/guide/admin/channel-chat/introduction.md
index 2a81d63..e755139 100644
--- a/docs/src/en/guide/admin/introduction-channel-chat.md
+++ b/docs/src/en/guide/admin/channel-chat/introduction.md
@@ -1,4 +1,4 @@
-# Channel Chat Deployment Guide
+# Channel Chat: Deployment Guide
 
 This guide explains how to deploy channel chat.
 
@@ -6,7 +6,7 @@ This guide explains how to deploy channel chat.
 
 Channel chat is a feature that allows players to create channels and share chat among specific players.
 
-For detailed features, please refer to the [Player Guide](../player/channel-chat/about.md).
+For detailed features, please refer to the [Player Guide](../../player/channel-chat/about.md).
 
 ## Preparing to Deploy Channel Chat
 
@@ -43,9 +43,21 @@ Recommended settings are as follows:
 
 :::
 
+## Channel Chat Logging
+
+::: warning Compatibility with Plugins like CoreProtect
+
+As of v0.7.0, LunaticChat's channel chat feature is not compatible with logging plugins like CoreProtect.
+
+:::
+
+Channel chat logging is enabled by default.
+
+For more details, see [Channel Chat: Logs](logs.md).
+
 ## Channel Management
 
-Basically, [players manage channels themselves](../player/channel-chat/moderation.md).
+Basically, [players manage channels themselves](../../player/channel-chat/moderation.md).
 
 However, as a server administrator, please note the following:
 
@@ -54,3 +66,9 @@ However, as a server administrator, please note the following:
 - If inappropriate channels or member behavior occurs, take appropriate action.
 
 If you want to avoid troubles related to channel management, consider restricting moderate commands such as `/lc channel ban`.
+
+## Plugins that Intercept Channel Chat
+
+Logging plugins like CoreProtect do not intercept LunaticChat's channel chat messages by default.
+
+However, plugins that use Paper API's `originalMessage()` to retrieve messages may intercept LunaticChat's channel chat messages.
diff --git a/docs/src/en/guide/admin/channel-chat/logs.md b/docs/src/en/guide/admin/channel-chat/logs.md
new file mode 100644
index 0000000..b65750b
--- /dev/null
+++ b/docs/src/en/guide/admin/channel-chat/logs.md
@@ -0,0 +1,119 @@
+# Channel Chat: Logs  <Badge type="tip" text="v0.7.0" />
+
+Channel chat logs are a record of all messages and activities that occur within the chat.
+
+::: warning Compatibility with Plugins like CoreProtect
+
+As of v0.7.0, LunaticChat's channel chat feature is not compatible with logging plugins like CoreProtect.
+
+:::
+
+## Checking Channel Chat Logs
+
+Channel chat logs are stored in the `plugins/LunaticChat/logs/channelchat/` directory.
+
+Channel chat log files are saved in the following format:
+
+```
+{"timestamp":"2026-01-31T08:54:18.504343071Z","playerId":"ceaea267-39dd-3bac-931c-761ada671ebe","playerName":"m1sk9","channelId":"test","message":"Hello"}
+```
+
+## About File Size
+
+Each line is a complete JSON object, separated by line breaks, and the file as a whole is not a JSON array.
+
+```text
+plugins/LunaticChat/logs/
+├── channel-messages-2026-01-17.json  (5.2 MB)
+├── channel-messages-2026-01-18.json  (4.8 MB)
+├── channel-messages-2026-01-19.json  (6.1 MB)
+├── channel-messages-2026-01-20.json  (5.5 MB)
+├── channel-messages-2026-01-21.json  (7.2 MB) <- Weekend, active
+├── channel-messages-2026-01-22.json  (6.9 MB)
+├── channel-messages-2026-01-23.json  (4.3 MB)
+├── channel-messages-2026-01-24.json  (5.0 MB)
+├── channel-messages-2026-01-25.json  (5.4 MB)
+├── channel-messages-2026-01-26.json  (4.9 MB)
+├── channel-messages-2026-01-27.json  (6.2 MB)
+├── channel-messages-2026-01-28.json  (7.5 MB)
+├── channel-messages-2026-01-29.json  (5.8 MB)
+├── channel-messages-2026-01-30.json  (6.0 MB)
+└── channel-messages-2026-01-31.json  (2.1 MB) <- Today (in progress)
+```
+
+Total: approximately 83 MB
+
+With a 30-day retention setting, the January 17 file will be automatically deleted tomorrow.
+
+### Size per Message
+
+Channel chat log entries are approximately 200 bytes per line.
+
+Assuming 1000 messages per hour:
+
+```text
+1000 msg/h × 24h × 220 bytes = 5,280,000 bytes ≈ 5.3 MB/day
+```
+
+With the default 30-day retention setting, this amounts to approximately **159 MB**.
+
+```text
+5.3 MB × 30 days = 159 MB
+```
+
+## Visualization with Grafana Loki
+
+Due to the JSON format, using Promtail to ingest channel chat logs into Grafana Loki will parse them for easier reading.
+
+```text
+2026-01-31 10:23:45.123  {job="lunatichat", player="Steve", channel="Global"}
+Hello everyone!
+
+2026-01-31 10:24:12.456  {job="lunatichat", player="Alex", channel="Global"}
+Hi Steve!
+
+2026-01-31 10:25:03.789  {job="lunatichat", player="Notch", channel="Development Team"}
+Working on new features
+```
+
+::: tip Filtering Examples
+
+Examples of querying logs in Grafana Loki:
+
+```text
+{job="lunatichat"} |= "new features"
+{job="lunatichat", channel="Global"}
+{job="lunatichat", player="Steve"}
+```
+
+:::
+
+## Command Line Checking Examples
+
+### View the latest 10 entries
+
+```bash
+tail -n 10 plugins/LunaticChat/logs/channel-messages-2026-01-31.json | jq
+```
+
+### Extract messages from a specific player
+
+```bash
+cat plugins/LunaticChat/logs/channel-messages-*.json | \
+jq 'select(.playerName=="Steve")'
+```
+
+### Count messages from a specific channel
+
+```bash
+cat plugins/LunaticChat/logs/channel-messages-*.json | \
+jq 'select(.channelId=="global")' | wc -l
+```
+
+### Message count by date
+
+```bash
+for file in plugins/LunaticChat/logs/channel-messages-*.json; do
+echo "$file: $(wc -l < $file) messages"
+done
+```
diff --git a/docs/src/en/guide/admin/configuration.md b/docs/src/en/guide/admin/configuration.md
index 6ce63b4..ef33ddc 100644
--- a/docs/src/en/guide/admin/configuration.md
+++ b/docs/src/en/guide/admin/configuration.md
@@ -54,6 +54,20 @@ features:
   channelChat:
     # If enabled, channel-based chat functionality will be activated.
     enabled: false
+    # Maximum number of channels that can be created per server. Set to 0 for unlimited.
+    maxChannelsPerServer: 0
+    # Maximum number of members allowed in a single channel. Set to 0 for unlimited.
+    maxMembersPerChannel: 0
+    # Maximum number of channels a single player can join. Set to 0 for unlimited.
+    maxMembershipPerPlayer: 0
+    # Channel message logging configuration
+    messageLogging:
+      # If enabled, all channel messages will be logged to NDJSON files for analysis and archival.
+      enabled: true
+      # Number of days to retain log files. Set to 0 to keep logs indefinitely.
+      retentionDays: 30
+      # Maximum size of a single log file in megabytes. Files exceeding this size will stop accepting new entries.
+      maxFileSizeMB: 100
 
 # ----------------------------------------------
 # ---------   Message Format Settings   --------
@@ -171,13 +185,67 @@ Specifies the timeout duration (in milliseconds) for API requests to the romaniz
 
 Specifies the number of retry attempts for failed API requests to the romanization conversion service.
 
-### `features.channelChat.enabled`
+### `features.channelChat`
+
+#### `enabled`
 
 - Type: `boolean`
 - Default: `false`
 
 Enables channel-based chat functionality.
 
+#### `maxChannelsPerServer`
+
+- Type: `integer`
+- Default: `0`
+
+Specifies the maximum number of channels that can be created per server.
+
+Set to `0` for unlimited.
+
+#### `maxMembersPerChannel`
+
+- Type: `integer`
+- Default: `0`
+
+Specifies the maximum number of members that can join a single channel.
+
+Set to `0` for unlimited.
+
+#### `maxMembershipPerPlayer`
+
+- Type: `integer`
+- Default: `0`
+
+Specifies the maximum number of channels a single player can join.
+
+Set to `0` for unlimited.
+
+#### `messageLogging.enabled`
+
+- Type: `boolean`
+- Default: `true`
+
+Specifies whether to log channel chat messages in NDJSON format.
+
+#### `messageLogging.retentionDays`
+
+- Type: `integer`
+- Default: `30`
+
+Specifies the number of days to retain channel chat log files.
+
+Set to `0` to never delete log files.
+
+#### `messageLogging.maxFileSizeMB`
+
+- Type: `integer`
+- Default: `100`
+
+Specifies the maximum size (in megabytes) of channel chat log files.
+
+Log files exceeding `maxFileSizeMB` will stop accepting new entries.
+
 ## Message Format Settings
 
 Available placeholders:
diff --git a/docs/src/en/guide/admin/data-and-logs.md b/docs/src/en/guide/admin/management-data.md
index e869552..ffed59d 100644
--- a/docs/src/en/guide/admin/data-and-logs.md
+++ b/docs/src/en/guide/admin/management-data.md
@@ -105,15 +105,3 @@ If the version does not match, LunaticChat recognizes the cache file as **old fo
 ```json
 {"version":"1","entries":{}}
 ```
-
-## About CoreProtect
-
-Various chat logs in LunaticChat can also be recorded in CoreProtect without requiring an API.
-
-Logs for each feature can be checked with the following actions. When using the `/co lookup` command, specify the following actions:
-
-- Direct messages: `command`
-- Global chat and channel chat: `chat`
-  - Japanese and romanization conversion is saved according to the player's settings.
-
-
diff --git a/docs/src/en/index.md b/docs/src/en/index.md
index c88e080..0fe8a53 100644
--- a/docs/src/en/index.md
+++ b/docs/src/en/index.md
@@ -32,9 +32,6 @@ features:
   - title: Japanese Romanization Conversion
     details: Automatically converts messages input in romaji to Japanese
     icon: 🌍
-  - title: CoreProtect Support
-    details: LunaticChat's chat logs are compatible with CoreProtect
-    icon: 🗒️
   - title: Channel Chat Feature (Planned)
     details: Create and manage chat channels, send private messages between specific players
     icon: ☎️