feat: add display UI with splash screen, dashboard, and RSSI sparkline

Implement full SSD1306 OLED display support:
- Splash screen on boot (1.5s) with project name, version, board
- Dashboard showing radio state, config, counters, RSSI/SNR
- RSSI history sparkline (64-sample ring buffer, 2px-wide bars)
- DisplayOn/DisplayOff host commands routed via dedicated channel
- Pure render functions against generic DrawTarget (no hardware coupling)
- Display on/off control bypasses radio task entirely

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

vendor/log/tests/macros.rs

@@ -0,0 +1,429 @@
+use log::{log, log_enabled, Log, Metadata, Record};
+
+macro_rules! all_log_macros {
+    ($($arg:tt)*) => ({
+        ::log::trace!($($arg)*);
+        ::log::debug!($($arg)*);
+        ::log::info!($($arg)*);
+        ::log::warn!($($arg)*);
+        ::log::error!($($arg)*);
+    });
+}
+
+// Not `Copy`
+struct Logger;
+
+impl Log for Logger {
+    fn enabled(&self, _: &Metadata) -> bool {
+        false
+    }
+    fn log(&self, _: &Record) {}
+    fn flush(&self) {}
+}
+
+#[test]
+fn no_args() {
+    let logger = Logger;
+
+    for lvl in log::Level::iter() {
+        log!(lvl, "hello");
+        log!(lvl, "hello",);
+
+        log!(target: "my_target", lvl, "hello");
+        log!(target: "my_target", lvl, "hello",);
+
+        log!(logger: logger, lvl, "hello");
+        log!(logger: logger, lvl, "hello",);
+
+        log!(logger: logger, target: "my_target", lvl, "hello");
+        log!(logger: logger, target: "my_target", lvl, "hello",);
+    }
+
+    all_log_macros!("hello");
+    all_log_macros!("hello",);
+
+    all_log_macros!(target: "my_target", "hello");
+    all_log_macros!(target: "my_target", "hello",);
+
+    all_log_macros!(logger: logger, "hello");
+    all_log_macros!(logger: logger, "hello",);
+
+    all_log_macros!(logger: logger, target: "my_target", "hello");
+    all_log_macros!(logger: logger, target: "my_target", "hello",);
+}
+
+#[test]
+fn anonymous_args() {
+    for lvl in log::Level::iter() {
+        log!(lvl, "hello {}", "world");
+        log!(lvl, "hello {}", "world",);
+
+        log!(target: "my_target", lvl, "hello {}", "world");
+        log!(target: "my_target", lvl, "hello {}", "world",);
+
+        log!(lvl, "hello {}", "world");
+        log!(lvl, "hello {}", "world",);
+    }
+
+    all_log_macros!("hello {}", "world");
+    all_log_macros!("hello {}", "world",);
+
+    all_log_macros!(target: "my_target", "hello {}", "world");
+    all_log_macros!(target: "my_target", "hello {}", "world",);
+
+    let logger = Logger;
+
+    all_log_macros!(logger: logger, "hello {}", "world");
+    all_log_macros!(logger: logger, "hello {}", "world",);
+
+    all_log_macros!(logger: logger, target: "my_target", "hello {}", "world");
+    all_log_macros!(logger: logger, target: "my_target", "hello {}", "world",);
+}
+
+#[test]
+fn named_args() {
+    for lvl in log::Level::iter() {
+        log!(lvl, "hello {world}", world = "world");
+        log!(lvl, "hello {world}", world = "world",);
+
+        log!(target: "my_target", lvl, "hello {world}", world = "world");
+        log!(target: "my_target", lvl, "hello {world}", world = "world",);
+
+        log!(lvl, "hello {world}", world = "world");
+        log!(lvl, "hello {world}", world = "world",);
+    }
+
+    all_log_macros!("hello {world}", world = "world");
+    all_log_macros!("hello {world}", world = "world",);
+
+    all_log_macros!(target: "my_target", "hello {world}", world = "world");
+    all_log_macros!(target: "my_target", "hello {world}", world = "world",);
+
+    let logger = Logger;
+
+    all_log_macros!(logger: logger, "hello {world}", world = "world");
+    all_log_macros!(logger: logger, "hello {world}", world = "world",);
+
+    all_log_macros!(logger: logger, target: "my_target", "hello {world}", world = "world");
+    all_log_macros!(logger: logger, target: "my_target", "hello {world}", world = "world",);
+}
+
+#[test]
+fn inlined_args() {
+    let world = "world";
+
+    for lvl in log::Level::iter() {
+        log!(lvl, "hello {world}");
+        log!(lvl, "hello {world}",);
+
+        log!(target: "my_target", lvl, "hello {world}");
+        log!(target: "my_target", lvl, "hello {world}",);
+
+        log!(lvl, "hello {world}");
+        log!(lvl, "hello {world}",);
+    }
+
+    all_log_macros!("hello {world}");
+    all_log_macros!("hello {world}",);
+
+    all_log_macros!(target: "my_target", "hello {world}");
+    all_log_macros!(target: "my_target", "hello {world}",);
+
+    let logger = Logger;
+
+    all_log_macros!(logger: logger, "hello {world}");
+    all_log_macros!(logger: logger, "hello {world}",);
+
+    all_log_macros!(logger: logger, target: "my_target", "hello {world}");
+    all_log_macros!(logger: logger, target: "my_target", "hello {world}",);
+}
+
+#[test]
+fn enabled() {
+    let logger = Logger;
+
+    for lvl in log::Level::iter() {
+        let _enabled = log_enabled!(lvl);
+        let _enabled = log_enabled!(target: "my_target", lvl);
+        let _enabled = log_enabled!(logger: logger, target: "my_target", lvl);
+        let _enabled = log_enabled!(logger: logger, lvl);
+    }
+}
+
+#[test]
+fn expr() {
+    let logger = Logger;
+
+    for lvl in log::Level::iter() {
+        log!(lvl, "hello");
+
+        log!(logger: logger, lvl, "hello");
+    }
+}
+
+#[test]
+#[cfg(feature = "kv")]
+fn kv_no_args() {
+    let logger = Logger;
+
+    for lvl in log::Level::iter() {
+        log!(target: "my_target", lvl, cat_1 = "chashu", cat_2 = "nori", cat_count = 2; "hello");
+        log!(lvl, cat_1 = "chashu", cat_2 = "nori", cat_count = 2; "hello");
+
+        log!(logger: logger, target: "my_target", lvl, cat_1 = "chashu", cat_2 = "nori", cat_count = 2; "hello");
+        log!(logger: logger, lvl, cat_1 = "chashu", cat_2 = "nori", cat_count = 2; "hello");
+    }
+
+    all_log_macros!(target: "my_target", cat_1 = "chashu", cat_2 = "nori", cat_count = 2; "hello");
+    all_log_macros!(target = "my_target", cat_1 = "chashu", cat_2 = "nori", cat_count = 2; "hello");
+    all_log_macros!(cat_1 = "chashu", cat_2 = "nori", cat_count = 2; "hello");
+
+    all_log_macros!(logger: logger, cat_1 = "chashu", cat_2 = "nori", cat_count = 2; "hello");
+    all_log_macros!(logger: logger, target: "my_target", cat_1 = "chashu", cat_2 = "nori", cat_count = 2; "hello");
+}
+
+#[test]
+#[cfg(feature = "kv")]
+fn kv_expr_args() {
+    let logger = Logger;
+
+    for lvl in log::Level::iter() {
+        log!(target: "my_target", lvl, cat_math = { let mut x = 0; x += 1; x + 1 }; "hello");
+
+        log!(lvl, target = "my_target", cat_math = { let mut x = 0; x += 1; x + 1 }; "hello");
+        log!(lvl, cat_math = { let mut x = 0; x += 1; x + 1 }; "hello");
+
+        log!(logger: logger, target: "my_target", lvl, cat_math = { let mut x = 0; x += 1; x + 1 }; "hello");
+
+        log!(logger: logger, lvl, target = "my_target", cat_math = { let mut x = 0; x += 1; x + 1 }; "hello");
+        log!(logger: logger, lvl, cat_math = { let mut x = 0; x += 1; x + 1 }; "hello");
+    }
+
+    all_log_macros!(target: "my_target", cat_math = { let mut x = 0; x += 1; x + 1 }; "hello");
+    all_log_macros!(target = "my_target", cat_math = { let mut x = 0; x += 1; x + 1 }; "hello");
+    all_log_macros!(cat_math = { let mut x = 0; x += 1; x + 1 }; "hello");
+
+    all_log_macros!(logger: logger, target: "my_target", cat_math = { let mut x = 0; x += 1; x + 1 }; "hello");
+    all_log_macros!(logger: logger, target = "my_target", cat_math = { let mut x = 0; x += 1; x + 1 }; "hello");
+    all_log_macros!(logger: logger, cat_math = { let mut x = 0; x += 1; x + 1 }; "hello");
+}
+
+#[test]
+#[cfg(feature = "kv")]
+fn kv_anonymous_args() {
+    let logger = Logger;
+
+    for lvl in log::Level::iter() {
+        log!(target: "my_target", lvl, cat_1 = "chashu", cat_2 = "nori", cat_count = 2; "hello {}", "world");
+        log!(lvl, target = "my_target", cat_1 = "chashu", cat_2 = "nori", cat_count = 2; "hello {}", "world");
+
+        log!(lvl, cat_1 = "chashu", cat_2 = "nori", cat_count = 2; "hello {}", "world");
+
+        log!(logger: logger, target: "my_target", lvl, cat_1 = "chashu", cat_2 = "nori", cat_count = 2; "hello {}", "world");
+        log!(logger: logger, lvl, target = "my_target", cat_1 = "chashu", cat_2 = "nori", cat_count = 2; "hello {}", "world");
+
+        log!(logger: logger, lvl, cat_1 = "chashu", cat_2 = "nori", cat_count = 2; "hello {}", "world");
+    }
+
+    all_log_macros!(target: "my_target", cat_1 = "chashu", cat_2 = "nori", cat_count = 2; "hello {}", "world");
+    all_log_macros!(target = "my_target", cat_1 = "chashu", cat_2 = "nori", cat_count = 2; "hello {}", "world");
+    all_log_macros!(cat_1 = "chashu", cat_2 = "nori", cat_count = 2; "hello {}", "world");
+
+    all_log_macros!(logger: logger, target: "my_target", cat_1 = "chashu", cat_2 = "nori", cat_count = 2; "hello {}", "world");
+    all_log_macros!(logger: logger, target = "my_target", cat_1 = "chashu", cat_2 = "nori", cat_count = 2; "hello {}", "world");
+    all_log_macros!(logger: logger, cat_1 = "chashu", cat_2 = "nori", cat_count = 2; "hello {}", "world");
+}
+
+#[test]
+#[cfg(feature = "kv")]
+fn kv_named_args() {
+    let logger = Logger;
+
+    for lvl in log::Level::iter() {
+        log!(target: "my_target", lvl, cat_1 = "chashu", cat_2 = "nori", cat_count = 2; "hello {world}", world = "world");
+        log!(lvl, target = "my_target", cat_1 = "chashu", cat_2 = "nori", cat_count = 2; "hello {world}", world = "world");
+
+        log!(lvl, cat_1 = "chashu", cat_2 = "nori", cat_count = 2; "hello {world}", world = "world");
+
+        log!(logger: logger, target: "my_target", lvl, cat_1 = "chashu", cat_2 = "nori", cat_count = 2; "hello {world}", world = "world");
+        log!(logger: logger, lvl, target = "my_target", cat_1 = "chashu", cat_2 = "nori", cat_count = 2; "hello {world}", world = "world");
+
+        log!(logger: logger, lvl, cat_1 = "chashu", cat_2 = "nori", cat_count = 2; "hello {world}", world = "world");
+    }
+
+    all_log_macros!(target: "my_target", cat_1 = "chashu", cat_2 = "nori", cat_count = 2; "hello {world}", world = "world");
+    all_log_macros!(target = "my_target", cat_1 = "chashu", cat_2 = "nori", cat_count = 2; "hello {world}", world = "world");
+    all_log_macros!(cat_1 = "chashu", cat_2 = "nori", cat_count = 2; "hello {world}", world = "world");
+
+    all_log_macros!(logger: logger, target: "my_target", cat_1 = "chashu", cat_2 = "nori", cat_count = 2; "hello {world}", world = "world");
+    all_log_macros!(logger: logger, target = "my_target", cat_1 = "chashu", cat_2 = "nori", cat_count = 2; "hello {world}", world = "world");
+    all_log_macros!(logger: logger, cat_1 = "chashu", cat_2 = "nori", cat_count = 2; "hello {world}", world = "world");
+}
+
+#[test]
+#[cfg(feature = "kv")]
+fn kv_ident() {
+    let cat_1 = "chashu";
+    let cat_2 = "nori";
+
+    all_log_macros!(cat_1, cat_2:%, cat_count = 2; "hello {world}", world = "world");
+}
+
+#[test]
+#[cfg(feature = "kv")]
+fn kv_expr_context() {
+    match "chashu" {
+        cat_1 => {
+            log::info!(target: "target", cat_1 = cat_1, cat_2 = "nori"; "hello {}", "cats");
+        }
+    };
+}
+
+#[test]
+fn implicit_named_args() {
+    let world = "world";
+
+    for lvl in log::Level::iter() {
+        log!(lvl, "hello {world}");
+        log!(lvl, "hello {world}",);
+
+        log!(target: "my_target", lvl, "hello {world}");
+        log!(target: "my_target", lvl, "hello {world}",);
+
+        log!(lvl, "hello {world}");
+        log!(lvl, "hello {world}",);
+    }
+
+    all_log_macros!("hello {world}");
+    all_log_macros!("hello {world}",);
+
+    all_log_macros!(target: "my_target", "hello {world}");
+    all_log_macros!(target: "my_target", "hello {world}",);
+
+    #[cfg(feature = "kv")]
+    all_log_macros!(target = "my_target"; "hello {world}");
+    #[cfg(feature = "kv")]
+    all_log_macros!(target = "my_target"; "hello {world}",);
+}
+
+#[test]
+#[cfg(feature = "kv")]
+fn kv_implicit_named_args() {
+    let world = "world";
+
+    for lvl in log::Level::iter() {
+        log!(target: "my_target", lvl, cat_1 = "chashu", cat_2 = "nori", cat_count = 2; "hello {world}");
+
+        log!(lvl, cat_1 = "chashu", cat_2 = "nori", cat_count = 2; "hello {world}");
+    }
+
+    all_log_macros!(target: "my_target", cat_1 = "chashu", cat_2 = "nori", cat_count = 2; "hello {world}");
+    all_log_macros!(target = "my_target", cat_1 = "chashu", cat_2 = "nori", cat_count = 2; "hello {world}");
+    all_log_macros!(cat_1 = "chashu", cat_2 = "nori", cat_count = 2; "hello {world}");
+}
+
+#[test]
+#[cfg(feature = "kv")]
+fn kv_string_keys() {
+    for lvl in log::Level::iter() {
+        log!(target: "my_target", lvl, "also dogs" = "Fílos", "key/that-can't/be/an/ident" = "hi"; "hello {world}", world = "world");
+    }
+
+    all_log_macros!(target: "my_target", "also dogs" = "Fílos", "key/that-can't/be/an/ident" = "hi"; "hello {world}", world = "world");
+}
+
+#[test]
+#[cfg(feature = "kv")]
+fn kv_common_value_types() {
+    all_log_macros!(
+        u8 = 42u8,
+        u16 = 42u16,
+        u32 = 42u32,
+        u64 = 42u64,
+        u128 = 42u128,
+        i8 = -42i8,
+        i16 = -42i16,
+        i32 = -42i32,
+        i64 = -42i64,
+        i128 = -42i128,
+        f32 = 4.2f32,
+        f64 = -4.2f64,
+        bool = true,
+        str = "string";
+        "hello world"
+    );
+}
+
+#[test]
+#[cfg(feature = "kv")]
+fn kv_debug() {
+    all_log_macros!(
+        a:? = 42,
+        b:debug = 42;
+        "hello world"
+    );
+}
+
+#[test]
+#[cfg(feature = "kv")]
+fn kv_display() {
+    all_log_macros!(
+        a:% = 42,
+        b:display = 42;
+        "hello world"
+    );
+}
+
+#[test]
+#[cfg(feature = "kv_std")]
+fn kv_error() {
+    all_log_macros!(
+        a:err = std::io::Error::new(std::io::ErrorKind::Other, "an error");
+        "hello world"
+    );
+}
+
+#[test]
+#[cfg(feature = "kv_sval")]
+fn kv_sval() {
+    all_log_macros!(
+        a:sval = 42;
+        "hello world"
+    );
+}
+
+#[test]
+#[cfg(feature = "kv_serde")]
+fn kv_serde() {
+    all_log_macros!(
+        a:serde = 42;
+        "hello world"
+    );
+}
+
+#[test]
+fn logger_short_lived() {
+    all_log_macros!(logger: Logger, "hello");
+    all_log_macros!(logger: &Logger, "hello");
+}
+
+#[test]
+fn logger_expr() {
+    all_log_macros!(logger: {
+        let logger = Logger;
+        logger
+    }, "hello");
+}
+
+/// Some and None (from Option) are used in the macros.
+#[derive(Debug)]
+enum Type {
+    Some,
+    None,
+}
+
+#[test]
+fn regression_issue_494() {
+    use self::Type::*;
+    all_log_macros!("some message: {:?}, {:?}", None, Some);
+}