Summary page

.github/copilot-instructions.md

@@ -24,6 +24,8 @@ per-process I/O statistics, ELF metadata, and thread information.
 
 - One-shot mode for a specific PID
 - Live mode dashboard with section filtering and refresh loop
+- Default live section is `Overview` (`5`) with 32-sample trend lanes
+  (CPU, RSS, RX/s, TX/s, WR/s)
 - Uses procfs endpoints provided by the kernel module
 
 ### Tests

README.md

@@ -40,7 +40,7 @@
 - **CPU Usage Tracking**: Real-time CPU percentage calculation per process and thread
 - **ELF Section Analysis**: Binary base address and section boundaries
 - **Proc Interface**: Easy access through `/proc/proclens_module/`
-- **Live Dashboard Mode**: No-arg mode refreshes every 1s with switchable Memory, Network, Threads, and I/O sections
+- **Live Dashboard Mode**: No-arg mode refreshes every 1s with a condensed Overview page, recent trend plots, and switchable Memory, Network, Threads, and I/O sections
 - **Comprehensive Testing**: Unit tests and QEMU-based E2E testing
 - **Code Quality**: Pre-configured static analysis (sparse, cppcheck, checkpatch)
 
@@ -72,9 +72,10 @@
 Running without arguments starts a live dashboard:
 
 - Auto-refreshes every 1 second
-- Defaults to section `1` (memory-related output)
-- Shows quick controls at the top: `1` memory, `2` network, `3` threads, `4` I/O
-- Shows command hints in-app: `1/2/3/4` switch sections, `0` changes PID
+- Defaults to section `5` (overview summary)
+- Overview includes 32-sample block-style histogram trend lanes for CPU, RSS, RX/s, TX/s, and WR/s based on recent snapshots
+- Shows quick controls at the top: `1` memory, `2` network, `3` threads, `4` I/O, `5` overview
+- Shows command hints in-app: `1/2/3/4/5` switch sections, `0` changes PID
 - Prints timestamps at top and bottom in `YY/MM/DD HH:MM:SS`
 - Keeps a snapshot history (up to 120 entries) for in-app navigation
 - Press Up/`k` for older snapshots, Down/`j` for newer snapshots, `f` to resume live follow

docs/TECHNICAL.md

@@ -121,19 +121,31 @@ Simple C program that supports two modes:
 Prompts for a PID, then enters a 1-second refresh loop with section filtering.
 Each refresh prints start/end timestamps in `YY/MM/DD HH:MM:SS`.
 Snapshots are kept in an in-memory ring buffer (120 entries) for history browsing.
+Default section is `5` (Overview).
+
+Overview mode includes trend lanes rendered from recent snapshot history:
+- CPU%
+- RSS
+- RX/s
+- TX/s
+- WR/s
+
+Each lane uses 32 samples and block-style histogram glyphs, with one blank line
+between lanes for readability.
 
 Controls shown in the header:
-- `1` - Memory section (default)
+- `1` - Memory section
 - `2` - Network section
 - `3` - Thread section
 - `4` - I/O section
+- `5` - Overview section (default)
 - `0` - Prompt for a new PID (switch process)
 - `Up` or `k` - Older snapshot
 - `Down` or `j` - Newer snapshot
 - `f` - Return to live-follow mode
 
-Keys `1`, `2`, `3`, `4` switch sections instantly (no Enter required). Pressing `0` temporarily
-restores cooked terminal mode so the user can type a PID, then returns to raw mode.
+Keys `1`, `2`, `3`, `4`, `5` switch sections instantly (no Enter required). Pressing `0`
+temporarily restores cooked terminal mode so the user can type a PID, then returns to raw mode.
 
 ### I/O Stats
 

docs/TESTING.md

@@ -181,13 +181,16 @@ Expected behavior:
 - If `proclens_module` is not loaded, program exits immediately with status `-1`
 - If required proc files are missing (`pid`, `det`, `threads`), program exits immediately with status `-1`
 - Screen refreshes every 1 second
-- Header shows controls (`1` memory, `2` network, `3` threads, `4` I/O, `0` switch PID)
+- Header shows controls (`1` memory, `2` network, `3` threads, `4` I/O, `5` overview, `0` switch PID)
 - Each refresh shows `Snapshot start` and `Snapshot end` timestamps in `YY/MM/DD HH:MM:SS`
+- Overview page shows 32-sample block-style histogram trend lanes for CPU, RSS, RX/s, TX/s, and WR/s once enough samples are collected
+- Trend lanes are separated by one blank line (for example between RX/s and TX/s)
 - `Up`/`k` moves to older snapshots, `Down`/`j` moves toward newer snapshots
 - While browsing old snapshots, header indicates history-browsing mode
 - Press `f` to return to live-follow mode
-- Default section is memory (`1`)
+- Default section is overview (`5`)
 - Press `4` to view only I/O statistics (`[io]` section)
+- Press `5` to return to the condensed overview page
 - Pressing `0` prompts for a new PID and continues live refresh for that PID
 
 Note: Live mode requires a real TTY for raw terminal input (`tcgetattr`/`tcsetattr`).