📝 Update More API Document

docs/api/console-sink.md

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+---
+name: console-sink
+group: api
+category: sink
+update-time: 20260520
+description: Create the built-in plain console sink for synchronous loggers.
+key-word:
+    - sink
+    - console
+    - sync
+    - public
+---
+
+## Console-sink
+
+Create the built-in plain console sink. This is the minimal terminal output sink commonly passed to `Logger::new(...)`.
+
+### Interface
+
+```moonbit
+pub fn console_sink() -> ConsoleSink {
+```
+
+#### output
+
+- `ConsoleSink` - Sink that writes records to the console using default text formatting.
+
+### Explanation
+
+Detailed rules explaining key parameters and behaviors
+
+- This sink writes formatted text to the console.
+- It is the simplest built-in sink for direct synchronous logging.
+- Use other sink constructors when JSON, custom text formatting, callbacks, routing, or buffering are needed.
+
+### How to Use
+
+Here are some specific examples provided.
+
+#### When Need Minimal Console Output
+
+When a logger only needs default terminal output:
+```moonbit
+let logger = Logger::new(console_sink(), target="app")
+logger.info("ready")
+```
+
+In this example, the logger writes directly to the console sink.
+
+### Error Case
+
+e.g.:
+- If richer formatting or routing is required, this sink may be too minimal and another sink constructor should be used.
+
+- Console output behavior still depends on the current runtime environment.
+
+### Notes
+
+1. This is the most common sink constructor for simple sync examples.
+
+2. Use `json_console_sink()` or `text_console_sink(...)` when output shape matters more explicitly.