fix(compaction): count compact_boundary markers instead of inferring from context-% drops

docs/DEVELOPMENT.md

@@ -51,7 +51,6 @@ bun run docs
 - `~/.config/ccstatusline/settings.json` - ccstatusline UI/render settings
 - `~/.claude/settings.json` - Claude Code settings (`statusLine` command object)
 - `~/.cache/ccstatusline/block-cache-*.json` - block timer cache (keyed by Claude config directory hash)
-- `~/.cache/ccstatusline/compaction/compaction-*.json` - per-session compaction counter state
 
 If you use a custom Claude config location, set `CLAUDE_CONFIG_DIR` and ccstatusline will read/write that path instead of `~/.claude`.
 

docs/USAGE.md

@@ -44,7 +44,7 @@ bun run example
 - **Tokens Input** / **Tokens Output** / **Tokens Cached** / **Tokens Total** - Show current-session token counts.
 - **Input Speed** / **Output Speed** / **Total Speed** - Show session-average token throughput with an optional per-widget rolling window (`0-120` seconds; `0` = full-session average).
 - **Context Length** / **Context Window** / **Context %** / **Context % (usable)** / **Context Bar** - Show current context length, total context window size, used/remaining percentage, usable-window percentage, or a progress bar.
-- **Compaction Counter** - Show how many context compactions have been detected in the current session. It can render as icon plus number, text plus number, or number-only, and can hide while the count is zero.
+- **Compaction Counter** - Show how many context compactions have occurred in the current session. It can render as icon plus number, text plus number, or number-only, and can hide while the count is zero.
 - **Session Usage** / **Weekly Usage** / **Weekly Sonnet Usage** / **Weekly Opus Usage** / **Extra Usage Utilization** / **Extra Usage Remaining** / **Block Timer** / **Block Reset Timer** / **Weekly Reset Timer** - Show usage percentages, monthly pay-as-you-go overage usage, and current block/reset timing. The all-models weekly bar covers `seven_day` from the usage API; the per-model variants surface the `seven_day_sonnet` and `seven_day_opus` buckets that Claude Code's own `/usage` panel shows. Session and weekly usage bars can show a time cursor; reset timers can show remaining time, progress, or exact reset date/time with timezone and locale controls.
 
 ### Environment, Layout & Custom

src/ccstatusline.ts

@@ -12,17 +12,12 @@ import type { StatusJSON } from './types/StatusJSON';
 import { StatusJSONSchema } from './types/StatusJSON';
 import { getVisibleText } from './utils/ansi';
 import { updateColorMap } from './utils/colors';
-import {
-    detectCompaction,
-    loadCompactionState,
-    saveCompactionState
-} from './utils/compaction';
+import { getCompactionCount } from './utils/compaction';
 import {
     initConfigPath,
     loadSettings,
     saveSettings
 } from './utils/config';
-import { calculateContextPercentageMetrics } from './utils/context-percentage';
 import { handleHookInput } from './utils/hook-handler';
 import {
     getSessionDuration,
@@ -145,24 +140,11 @@ async function renderMultipleLines(data: StatusJSON) {
         skillsMetrics = getSkillsMetrics(data.session_id);
     }
 
-    // Compaction detection — track context percentage drops between renders
+    // Compaction count — count compact_boundary markers in this session's transcript
     let compactionCount = 0;
     const hasCompactionWidget = lines.some(line => line.some(item => item.type === 'compaction-counter'));
-    if (hasCompactionWidget && data.session_id) {
-        const prevState = loadCompactionState(data.session_id);
-        compactionCount = prevState.count;
-        const contextPercentageMetrics = calculateContextPercentageMetrics({ data, tokenMetrics });
-        if (contextPercentageMetrics !== null) {
-            const newState = detectCompaction(contextPercentageMetrics.usedPercentage, prevState, { windowSize: contextPercentageMetrics.windowSize });
-            if (
-                newState.count !== prevState.count
-                || newState.prevCtxPct !== prevState.prevCtxPct
-                || newState.prevWindowSize !== prevState.prevWindowSize
-            ) {
-                saveCompactionState(data.session_id, newState);
-            }
-            compactionCount = newState.count;
-        }
+    if (hasCompactionWidget && data.transcript_path) {
+        compactionCount = await getCompactionCount(data.transcript_path);
     }
 
     // Create render context