feat(me): improve dashboard rendering with dynamic layout and table-based activity

Overhaul the `lore me` human-mode renderer for better terminal adaptation
and visual clarity:

Layout:
- Add terminal_width() detection (COLUMNS env -> stderr ioctl -> 80 fallback)
- Replace hardcoded column widths with dynamic title_width() that adapts to
  terminal size, clamped to [20, 80]
- Section dividers now span the full terminal width

Activity feed:
- Replace manual println! formatting with Table-based rendering for proper
  column alignment across variable-width content
- Split event_badge() into activity_badge_label() + activity_badge_style()
  for table cell compatibility
- Add system_event_style() (#555555 dark gray) to visually suppress
  non-note events (label, assign, status, milestone, review changes)
- Own actions use dim styling; others' notes render at full color

MR display:
- Add humanize_merge_status() to convert GitLab API values like
  "not_approved" -> "needs approval", "ci_must_pass" -> "CI pending"

Table infrastructure (render.rs):
- Add Table::columns() for headerless tables
- Add Table::indent() for row-level indentation
- Add truncate_pad() for fixed-width cell formatting
- Table::render() now supports headerless mode (no separator line)

Other:
- Default activity lookback changed from 30d to 1d (more useful default)
- Robot-docs schema added for `me` command
- AGENTS.md and CLAUDE.md updated with `lore me` examples

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/cli/render.rs

@@ -532,6 +532,43 @@ pub fn format_datetime(ms: i64) -> String {
         .unwrap_or_else(|| "unknown".to_string())
 }
 
+/// Detect terminal width. Checks `COLUMNS` env, then stderr ioctl, falls back to 80.
+pub fn terminal_width() -> usize {
+    // 1. Explicit COLUMNS env (set by some shells, resized terminals)
+    if let Ok(val) = std::env::var("COLUMNS")
+        && let Ok(w) = val.parse::<usize>()
+        && w > 0
+    {
+        return w;
+    }
+
+    // 2. ioctl on stderr (works even when stdout is piped)
+    #[cfg(unix)]
+    {
+        use std::mem::MaybeUninit;
+        #[allow(non_camel_case_types)]
+        #[repr(C)]
+        struct winsize {
+            ws_row: libc::c_ushort,
+            ws_col: libc::c_ushort,
+            ws_xpixel: libc::c_ushort,
+            ws_ypixel: libc::c_ushort,
+        }
+        let mut ws = MaybeUninit::<winsize>::uninit();
+        // SAFETY: ioctl with TIOCGWINSZ writes into the winsize struct.
+        // stderr (fd 2) is used because stdout may be piped.
+        if unsafe { libc::ioctl(2, libc::TIOCGWINSZ, ws.as_mut_ptr()) } == 0 {
+            let ws = unsafe { ws.assume_init() };
+            let w = ws.ws_col as usize;
+            if w > 0 {
+                return w;
+            }
+        }
+    }
+
+    80
+}
+
 /// Truncate a string to `max` characters, appending "..." if truncated.
 pub fn truncate(s: &str, max: usize) -> String {
     if max < 4 {
@@ -545,6 +582,17 @@ pub fn truncate(s: &str, max: usize) -> String {
     }
 }
 
+/// Truncate and right-pad to exactly `width` visible characters.
+pub fn truncate_pad(s: &str, width: usize) -> String {
+    let t = truncate(s, width);
+    let count = t.chars().count();
+    if count < width {
+        format!("{t}{}", " ".repeat(width - count))
+    } else {
+        t
+    }
+}
+
 /// Word-wrap text to `width`, prepending `indent` to continuation lines.
 /// Returns a single string with embedded newlines.
 pub fn wrap_indent(text: &str, width: usize, indent: &str) -> String {
@@ -603,7 +651,10 @@ pub fn wrap_lines(text: &str, width: usize) -> Vec<String> {
 
 /// Render a section divider: `── Title ──────────────────────`
 pub fn section_divider(title: &str) -> String {
-    let rule_len = 40_usize.saturating_sub(title.len() + 4);
+    // prefix: 2 indent + 2 box-drawing + 1 space = 5
+    // suffix: 1 space + trailing box-drawing
+    let used = 5 + title.len() + 1;
+    let rule_len = terminal_width().saturating_sub(used);
     format!(
         "\n  {} {} {}",
         Theme::dim().render("\u{2500}\u{2500}"),
@@ -734,6 +785,8 @@ pub struct Table {
     rows: Vec<Vec<StyledCell>>,
     alignments: Vec<Align>,
     max_widths: Vec<Option<usize>>,
+    col_count: usize,
+    indent: usize,
 }
 
 impl Table {
@@ -744,9 +797,23 @@ impl Table {
     /// Set column headers.
     pub fn headers(mut self, h: &[&str]) -> Self {
         self.headers = h.iter().map(|s| (*s).to_string()).collect();
-        // Initialize alignments and max_widths to match column count
-        self.alignments.resize(self.headers.len(), Align::Left);
-        self.max_widths.resize(self.headers.len(), None);
+        self.col_count = self.headers.len();
+        self.alignments.resize(self.col_count, Align::Left);
+        self.max_widths.resize(self.col_count, None);
+        self
+    }
+
+    /// Set column count without headers (headerless table).
+    pub fn columns(mut self, n: usize) -> Self {
+        self.col_count = n;
+        self.alignments.resize(n, Align::Left);
+        self.max_widths.resize(n, None);
+        self
+    }
+
+    /// Set indent (number of spaces) prepended to each row.
+    pub fn indent(mut self, spaces: usize) -> Self {
+        self.indent = spaces;
         self
     }
 
@@ -773,15 +840,20 @@ impl Table {
 
     /// Render the table to a string.
     pub fn render(&self) -> String {
-        if self.headers.is_empty() {
+        let col_count = self.col_count;
+        if col_count == 0 {
             return String::new();
         }
 
-        let col_count = self.headers.len();
         let gap = "  "; // 2-space gap between columns
+        let indent_str = " ".repeat(self.indent);
 
-        // Compute column widths from content
-        let mut widths: Vec<usize> = self.headers.iter().map(|h| h.chars().count()).collect();
+        // Compute column widths from headers (if any) and all row cells
+        let mut widths: Vec<usize> = if self.headers.is_empty() {
+            vec![0; col_count]
+        } else {
+            self.headers.iter().map(|h| h.chars().count()).collect()
+        };
 
         for row in &self.rows {
             for (i, cell) in row.iter().enumerate() {
@@ -802,29 +874,32 @@ impl Table {
 
         let mut out = String::new();
 
-        // Header row (bold)
-        let header_parts: Vec<String> = self
-            .headers
-            .iter()
-            .enumerate()
-            .map(|(i, h)| {
-                let w = widths.get(i).copied().unwrap_or(0);
-                let text = truncate(h, w);
-                pad_cell(
-                    &text,
-                    w,
-                    self.alignments.get(i).copied().unwrap_or(Align::Left),
-                )
-            })
-            .collect();
-        out.push_str(&Theme::header().render(&header_parts.join(gap)));
-        out.push('\n');
+        // Header row + separator (only when headers are set)
+        if !self.headers.is_empty() {
+            let header_parts: Vec<String> = self
+                .headers
+                .iter()
+                .enumerate()
+                .map(|(i, h)| {
+                    let w = widths.get(i).copied().unwrap_or(0);
+                    let text = truncate(h, w);
+                    pad_cell(
+                        &text,
+                        w,
+                        self.alignments.get(i).copied().unwrap_or(Align::Left),
+                    )
+                })
+                .collect();
+            out.push_str(&indent_str);
+            out.push_str(&Theme::header().render(&header_parts.join(gap)));
+            out.push('\n');
 
-        // Separator
-        let total_width: usize =
-            widths.iter().sum::<usize>() + gap.len() * col_count.saturating_sub(1);
-        out.push_str(&Theme::dim().render(&"\u{2500}".repeat(total_width)));
-        out.push('\n');
+            let total_width: usize =
+                widths.iter().sum::<usize>() + gap.len() * col_count.saturating_sub(1);
+            out.push_str(&indent_str);
+            out.push_str(&Theme::dim().render(&"\u{2500}".repeat(total_width)));
+            out.push('\n');
+        }
 
         // Data rows
         for row in &self.rows {
@@ -856,6 +931,7 @@ impl Table {
                     parts.push(" ".repeat(w));
                 }
             }
+            out.push_str(&indent_str);
             out.push_str(&parts.join(gap));
             out.push('\n');
         }