compass

1import { atom, read, update } from 'claude-code'
2import type { EngineInterface, Register } from 'claude-code'
3
4import type { CompassSnap } from '../types'
5import { fmtSpan, untilReset } from './lib/kz.ts'
6import { GIT_STATUS, parseGitStatus } from './lib/probe.ts'
7
8const blank = (): CompassSnap => ({ agentsRunning: 0, isRepo: false, changedFiles: 0, edits: 0, idleMin: 0, now: 0 })
9const snapAtom = atom({ plugin: 'compass', key: 'snap' } as const, blank())
10const onAtom = atom({ plugin: 'compass', key: 'isOn' } as const, true)
11
12const LIMIT_AT = 90
13const CTX_AT = 80
14const DRAFT_IDLE_MIN = 3
15const EDIT_TOOLS = ['Edit', 'Write', 'NotebookEdit', 'MultiEdit']
16
17let live: CompassSnap = blank()
18let lastActivity = 0
19let tick = 0
20let lastPublished = ''
21
22async function sh($: EngineInterface, argv: readonly string[], timeoutMs: number, cwd?: string): Promise<string | undefined> {
23  try {
24    const r = await $.process.run(argv, cwd ? { timeoutMs, cwd } : { timeoutMs })
25    return r.exitCode === 0 ? r.stdout : undefined
26  } catch {
27    return undefined
28  }
29}
30
31async function publish($: EngineInterface): Promise<void> {
32  const now = await $.clock.now()
33  live.idleMin = Math.floor((now - lastActivity) / 60_000)
34  live.now = Math.floor(now / 60_000) * 60_000
35  const key = JSON.stringify(live)
36  if (key === lastPublished) return
37  lastPublished = key
38  const snap: CompassSnap = { ...live, fiveHour: live.fiveHour ? { ...live.fiveHour } : undefined }
39  await update($, snapAtom, () => snap)
40}
41
42async function sample($: EngineInterface): Promise<void> {
43  tick++
44  try {
45    const u = await $.session.usage()
46    const five = u.rateLimits.find(l => l.kind === 'five_hour')
47    live.fiveHour = five ? { percent: five.percentUsed, resetsAt: five.resetsAt } : undefined
48    live.ctxPercent = u.context.percent
49  } catch {
50    // Keep the last reading.
51  }
52  try {
53    const agents = await $.agent.list()
54    live.agentsRunning = agents.filter(a => a.status === 'running' || a.status === 'pending').length
55  } catch {
56    // Keep the last count.
57  }
58  // Git every 10 s (each fifth 2 s tick), once this session has edited a file:
59  // until then the commit hint cannot apply and no process is spawned.
60  if (live.edits > 0 && tick % 5 === 1) {
61    const out = await sh($, GIT_STATUS, 5000, await $.session.cwd())
62    if (out === undefined) {
63      live.isRepo = false
64      live.changedFiles = 0
65    } else {
66      const g = parseGitStatus(out)
67      live.isRepo = g.isRepo
68      live.changedFiles = g.staged + g.unstaged + g.untracked + g.conflicts
69    }
70  }
71  await publish($)
72}
73
74/** The one hint worth the line now, or undefined to leave the engine's. */
75function pickHint(s: CompassSnap, isDraft: boolean, isWorking: boolean): string | undefined {
76  if (s.fiveHour && s.fiveHour.percent >= LIMIT_AT) {
77    const left = untilReset({ kind: 'five_hour', percentUsed: s.fiveHour.percent, resetsAt: s.fiveHour.resetsAt }, s.now)
78    const pct = Math.round(s.fiveHour.percent)
79    return left !== undefined ? `5h ${pct}% — resets in ${fmtSpan(left)}` : `5h ${pct}% used`
80  }
81  if (s.ctxPercent !== undefined && s.ctxPercent >= CTX_AT) return `ctx ${Math.round(s.ctxPercent)}% — /compact soon`
82  if (s.agentsRunning > 0) return `◈ ${s.agentsRunning} agent${s.agentsRunning === 1 ? '' : 's'} working`
83  if (!isWorking && s.edits > 0 && s.isRepo && s.changedFiles > 0) return `✎ ${s.changedFiles} file${s.changedFiles === 1 ? '' : 's'} changed — commit?`
84  if (!isWorking && isDraft && s.idleMin >= DRAFT_IDLE_MIN) return `⏎ draft waiting ${s.idleMin}m — enter sends it`
85  return undefined
86}
87
88async function setOn($: EngineInterface, isOn: boolean): Promise<void> {
89  await update($, onAtom, () => isOn)
90  await $.store.set('isOn', isOn)
91}
92
93async function touch($: EngineInterface): Promise<void> {
94  lastActivity = await $.clock.now()
95  await publish($)
96}
97
98export const register: Register = on => {
99  on('session.start', async ($, e, next) => {
100    const started = await next(e)
101    live = blank()
102    tick = 0
103    lastPublished = ''
104    lastActivity = await $.clock.now()
105    await $.command.register({ name: 'compass', description: 'KOZMOS: toggle the contextual hint under the prompt (/compass on|off)', argumentHint: '[on|off]', immediate: true })
106    try {
107      const stored = await $.store.get('isOn')
108      await update($, onAtom, () => stored !== false)
109    } catch {
110      // Default on.
111    }
112    await sample($).catch(() => undefined)
113    $.clock.every(2000, () => void sample($).catch(() => undefined))
114    return started
115  })
116
117  on('command.run', { command: 'compass' }, async ($, e) => {
118    const arg = e.args.trim().toLowerCase()
119    const isOn = arg === 'on' ? true : arg === 'off' ? false : !(await read($, onAtom))
120    await setOn($, isOn)
121    const s = await read($, snapAtom)
122    const now = pickHint(s, false, false)
123    return { text: isOn ? `Compass on.${now ? ` Now: ${now}` : ' Nothing to flag right now.'}` : 'Compass off: the hint line is the engine’s.' }
124  })
125
126  on('turn.start', async ($, e, next) => {
127    void touch($).catch(() => undefined)
128    return next(e)
129  }).catch(($, e, next) => next(e))
130
131  on('turn.complete', async ($, e, next) => {
132    if (e.agentId === undefined) void touch($).catch(() => undefined)
133    return next(e)
134  }).catch(($, e, next) => next(e))
135
136  on('tool.call', async ($, e, next) => {
137    const ran = await next(e)
138    if (EDIT_TOOLS.includes(String(e.tool)) && ran.deny === undefined && ran.isError !== true) {
139      const isFirst = live.edits === 0
140      live.edits++
141      // The first edit probes git on the next tick rather than 10 s later.
142      if (isFirst) tick = 0
143    }
144    return ran
145  }).catch(($, e, next) => next(e))
146
147  on('ui.render', { component: 'PromptHint' }, async ($, e, next) => {
148    const p = e.props
149    if (!(await read($, onAtom))) return next(e)
150    const hint = pickHint(await read($, snapAtom), p.isDraft === true, p.isWorking === true)
151    if (!hint) return next(e)
152    if (e.surface === 'terminal') {
153      // The terminal keeps its own line (its pills stay live) and draws `tail` dim after it.
154      const tail = p.tail ? `${p.tail} · ${hint}` : `· ${hint}`
155      return next({ ...e, props: { ...p, tail } })
156    }
157    // Other surfaces draw no tail yet: the hint leads the line.
158    return next({ ...e, props: { ...p, hint: p.hint ? `${hint} · ${p.hint}` : hint } })
159  })
160}
161

1// GENERATED by scripts/sync-shared.mjs from shared/kz.ts. Do not edit here.
2// KOZMOS shared kit. Source of truth: shared/kz.ts at the bundle root.
3// `node scripts/sync-shared.mjs` copies it into every mod as hooks/lib/kz.ts,
4// because a hooks module may only import files inside its own plugin.
5// Edit the root copy, never a mod's copy.
6
7// ---------------------------------------------------------------------------
8// Palette: one neon family across every KOZMOS mod.
9
10export const KZ = {
11  violet: '#a78bfa',
12  magenta: '#f472b6',
13  cyan: '#22d3ee',
14  teal: '#2dd4bf',
15  green: '#4ade80',
16  lime: '#a3e635',
17  yellow: '#facc15',
18  amber: '#fb923c',
19  red: '#f87171',
20  blue: '#60a5fa',
21  clay: '#d97757',
22  ink: '#1f1e1d',
23  mist: '#9ca3af',
24} as const
25
26/** Tool families, colored the same in every mod. */
27export function toolColor(tool: string): string {
28  const t = String(tool)
29  if (t === 'Bash' || t === 'PowerShell') return KZ.green
30  if (t === 'Edit' || t === 'Write' || t === 'NotebookEdit' || t === 'MultiEdit') return KZ.yellow
31  if (t === 'Read' || t === 'Glob' || t === 'Grep' || t === 'LSP') return KZ.blue
32  if (t === 'Agent' || t === 'Task' || t === 'Workflow') return KZ.violet
33  if (t.startsWith('Web')) return KZ.cyan
34  if (t.startsWith('Todo') || t.startsWith('Task')) return KZ.teal
35  if (t.startsWith('mcp__')) return KZ.magenta
36  return KZ.mist
37}
38
39/** A short glyph per tool family. */
40export function toolGlyph(tool: string): string {
41  const t = String(tool)
42  if (t === 'Bash' || t === 'PowerShell') return '$'
43  if (t === 'Edit' || t === 'Write' || t === 'NotebookEdit') return '✎'
44  if (t === 'Read') return '◉'
45  if (t === 'Glob' || t === 'Grep') return '⌕'
46  if (t === 'Agent') return '◈'
47  if (t.startsWith('Web')) return '◍'
48  if (t.startsWith('Todo') || t.startsWith('Task')) return '☑'
49  if (t.startsWith('mcp__')) return '⬡'
50  return '•'
51}
52
53// ---------------------------------------------------------------------------
54// Colors.
55
56export function hexToRgb(hex: string): [number, number, number] {
57  const h = hex.replace('#', '')
58  const n = parseInt(h.length === 3 ? h.split('').map(c => c + c).join('') : h, 16)
59  return [(n >> 16) & 255, (n >> 8) & 255, n & 255]
60}
61
62export function rgbToHex(r: number, g: number, b: number): string {
63  const c = (v: number) => Math.max(0, Math.min(255, Math.round(v))).toString(16).padStart(2, '0')
64  return `#${c(r)}${c(g)}${c(b)}`
65}
66
67export function mix(a: string, b: string, t: number): string {
68  const [r1, g1, b1] = hexToRgb(a)
69  const [r2, g2, b2] = hexToRgb(b)
70  const k = clamp01(t)
71  return rgbToHex(r1 + (r2 - r1) * k, g1 + (g2 - g1) * k, b1 + (b2 - b1) * k)
72}
73
74/** Green at 0, yellow at 0.6, red at 1: the heat of a gauge. */
75export function heat(t: number): string {
76  const k = clamp01(t)
77  return k < 0.6 ? mix(KZ.green, KZ.yellow, k / 0.6) : mix(KZ.yellow, KZ.red, (k - 0.6) / 0.4)
78}
79
80/** A smooth rainbow for hues 0..1 (for auroras, plasma and the like). */
81export function hue(h: number, s = 0.75, l = 0.6): string {
82  const k = ((h % 1) + 1) % 1
83  const a = s * Math.min(l, 1 - l)
84  const f = (n: number) => {
85    const x = (n + k * 12) % 12
86    return l - a * Math.max(-1, Math.min(x - 3, 9 - x, 1))
87  }
88  return rgbToHex(f(0) * 255, f(8) * 255, f(4) * 255)
89}
90
91export function hexToInt(hex: string): number {
92  const [r, g, b] = hexToRgb(hex)
93  return (r << 16) | (g << 8) | b
94}
95
96// ---------------------------------------------------------------------------
97// Numbers and text.
98
99export const clamp01 = (v: number): number => (Number.isFinite(v) ? Math.max(0, Math.min(1, v)) : 0)
100
101export function fmtTokens(n: number): string {
102  if (!Number.isFinite(n)) return '—'
103  // Each unit starts where the one below would round up to 1000 of itself.
104  if (n >= 999.5e6) return `${(n / 1e9).toFixed(1)}B`
105  if (n >= 999_500) return `${(n / 1e6).toFixed(n >= 1e7 ? 0 : 1)}M`
106  if (n >= 999.5) return `${(n / 1e3).toFixed(n >= 1e4 ? 0 : 1)}k`
107  return `${Math.round(n)}`
108}
109
110export function fmtUsd(usd: number): string {
111  if (!Number.isFinite(usd)) return '$—'
112  if (usd < 0.01 && usd > 0) return '<$0.01'
113  return usd < 100 ? `$${usd.toFixed(2)}` : `$${Math.round(usd)}`
114}
115
116/** 0:42, 3:07, 1:02:33. */
117export function fmtClock(ms: number): string {
118  const s = Math.max(0, Math.round(ms / 1000))
119  const h = Math.floor(s / 3600)
120  const m = Math.floor((s % 3600) / 60)
121  const ss = String(s % 60).padStart(2, '0')
122  return h ? `${h}:${String(m).padStart(2, '0')}:${ss}` : `${m}:${ss}`
123}
124
125/** 42s, 7m, 2h41m, 3d4h: compact durations for countdowns. */
126export function fmtSpan(ms: number): string {
127  const s = Math.max(0, Math.round(ms / 1000))
128  if (s < 60) return `${s}s`
129  const m = Math.floor(s / 60)
130  if (m < 60) return `${m}m`
131  const h = Math.floor(m / 60)
132  if (h < 48) return `${h}h${String(m % 60).padStart(2, '0')}m`
133  return `${Math.floor(h / 24)}d${h % 24}h`
134}
135
136export function fmtPct(p: number | undefined): string {
137  return p === undefined || !Number.isFinite(p) ? '—' : `${Math.round(p)}%`
138}
139
140export function clip(s: string, max: number): string {
141  const one = s.replace(/\s+/g, ' ').trim()
142  return one.length > max ? one.slice(0, Math.max(1, max - 1)) + '…' : one
143}
144
145export function padEnd(s: string, n: number): string {
146  return s.length >= n ? s.slice(0, n) : s + ' '.repeat(n - s.length)
147}
148
149export function padStart(s: string, n: number): string {
150  return s.length >= n ? s.slice(s.length - n) : ' '.repeat(n - s.length) + s
151}
152
153/** `claude-opus-5-5[1m]` → `Opus 5.5`. */
154export function modelName(id: string | undefined): string {
155  if (!id) return '—'
156  const m = /(fable|mythos|opus|sonnet|haiku)-(\d+)(?:-(\d{1,2})(?!\d))?/i.exec(id)
157  if (!m) return id.replace(/^claude-/, '').replace(/\[.*\]$/, '')
158  const fam = m[1]!
159  return `${fam.charAt(0).toUpperCase()}${fam.slice(1).toLowerCase()} ${m[2]}${m[3] ? '.' + m[3] : ''}`
160}
161
162/** Last path segment, either slash. */
163export function baseName(p: string): string {
164  const parts = p.split(/[\\/]/).filter(Boolean)
165  return parts[parts.length - 1] ?? p
166}
167
168/** A stable small hash for seeding. */
169export function hash(s: string): number {
170  let h = 2166136261
171  for (let i = 0; i < s.length; i++) {
172    h ^= s.charCodeAt(i)
173    h = Math.imul(h, 16777619)
174  }
175  return h >>> 0
176}
177
178/** Deterministic 0..1 noise from two ints. */
179export function noise(x: number, y: number): number {
180  const s = Math.sin(x * 12.9898 + y * 78.233) * 43758.5453
181  return s - Math.floor(s)
182}
183
184/** A seeded PRNG (mulberry32). */
185export function rng(seed: number): () => number {
186  let a = seed >>> 0
187  return () => {
188    a = (a + 0x6d2b79f5) >>> 0
189    let t = a
190    t = Math.imul(t ^ (t >>> 15), t | 1)
191    t ^= t + Math.imul(t ^ (t >>> 7), t | 61)
192    return ((t ^ (t >>> 14)) >>> 0) / 4294967296
193  }
194}
195
196// ---------------------------------------------------------------------------
197// Text gauges for the terminal.
198
199const EIGHTHS = ['', '▏', '▎', '▍', '▌', '▋', '▊', '▉']
200
201/** A smooth bar with eighth blocks: `█████▍    `. */
202export function bar(ratio: number, width: number, empty = '░'): string {
203  const w = Math.max(1, Math.floor(width))
204  const exact = clamp01(ratio) * w
205  const full = Math.floor(exact)
206  const part = EIGHTHS[Math.floor((exact - full) * 8)] ?? ''
207  const used = full + (part ? 1 : 0)
208  return '█'.repeat(full) + part + empty.repeat(Math.max(0, w - used))
209}
210
211/** A segmented gauge: `▰▰▰▱▱▱`. */
212export function pips(ratio: number, width: number, on = '▰', off = '▱'): string {
213  const w = Math.max(1, Math.floor(width))
214  const n = Math.round(clamp01(ratio) * w)
215  return on.repeat(n) + off.repeat(w - n)
216}
217
218const SPARK = '▁▂▃▄▅▆▇█'
219
220/** A sparkline of the last `width` values, scaled to their own max (or `max`). */
221export function sparkline(values: readonly number[], width: number, max?: number): string {
222  const tail = values.slice(-Math.max(1, width))
223  const top = max ?? Math.max(1e-9, ...tail)
224  const line = tail.map(v => SPARK[Math.min(7, Math.max(0, Math.round((v / top) * 7)))] ?? '▁').join('')
225  return line.padStart(width, ' ')
226}
227
228/** Braille line graph, 2 samples per cell, `rows` cells tall. */
229export function brailleGraph(values: readonly number[], width: number, rows: number, max?: number): string[] {
230  const samples = values.slice(-(width * 2))
231  const top = max ?? Math.max(1e-9, ...samples)
232  const dotsTall = rows * 4
233  const grid: number[][] = Array.from({ length: rows }, () => Array.from({ length: width }, () => 0))
234  const offset = width * 2 - samples.length
235  // Dot bits per column, from the bottom row of a cell up.
236  const LEFT = [0x40, 0x04, 0x02, 0x01]
237  const RIGHT = [0x80, 0x20, 0x10, 0x08]
238  samples.forEach((v, i) => {
239    const x = offset + i
240    const col = Math.floor(x / 2)
241    const isRight = x % 2 === 1
242    const h = Math.round(clamp01(v / top) * (dotsTall - 1))
243    for (let d = 0; d <= h; d++) {
244      const row = rows - 1 - Math.floor(d / 4)
245      const bits = isRight ? RIGHT : LEFT
246      const cellRow = grid[row]
247      if (cellRow && col >= 0) cellRow[col] = (cellRow[col] ?? 0) | bits[d % 4]!
248    }
249  })
250  return grid.map(r => r.map(b => String.fromCharCode(0x2800 + b)).join(''))
251}
252
253// ---------------------------------------------------------------------------
254// Raster: a grid of colored cells, packed as the engine wants it.
255
256const B64 = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
257
258export function toBase64(bytes: Uint8Array): string {
259  let out = ''
260  let i = 0
261  for (; i + 2 < bytes.length; i += 3) {
262    const n = (bytes[i]! << 16) | (bytes[i + 1]! << 8) | bytes[i + 2]!
263    out += B64[(n >> 18) & 63]! + B64[(n >> 12) & 63]! + B64[(n >> 6) & 63]! + B64[n & 63]!
264  }
265  const rest = bytes.length - i
266  if (rest === 1) {
267    const n = bytes[i]! << 16
268    out += B64[(n >> 18) & 63]! + B64[(n >> 12) & 63]! + '=='
269  } else if (rest === 2) {
270    const n = (bytes[i]! << 16) | (bytes[i + 1]! << 8)
271    out += B64[(n >> 18) & 63]! + B64[(n >> 12) & 63]! + B64[(n >> 6) & 63]! + '='
272  }
273  return out
274}
275
276/** The terminal's own default color, for a cell's foreground or background. */
277export const DEFAULT_COLOR = 0x01000000
278
279export class Canvas {
280  readonly cols: number
281  readonly rows: number
282  private readonly words: Uint32Array
283
284  constructor(cols: number, rows: number) {
285    this.cols = Math.max(1, Math.min(512, Math.floor(cols)))
286    this.rows = Math.max(1, Math.min(256, Math.floor(rows)))
287    this.words = new Uint32Array(this.cols * this.rows * 3)
288    this.clear()
289  }
290
291  clear(bg: number = DEFAULT_COLOR): void {
292    for (let i = 0; i < this.cols * this.rows; i++) {
293      this.words[i * 3] = 0x20
294      this.words[i * 3 + 1] = DEFAULT_COLOR
295      this.words[i * 3 + 2] = bg
296    }
297  }
298
299  /** Puts one width-1 character; colors are '#rrggbb' or a packed int. */
300  set(x: number, y: number, ch: string, fg?: string | number, bg?: string | number): void {
301    const cx = Math.floor(x)
302    const cy = Math.floor(y)
303    if (cx < 0 || cy < 0 || cx >= this.cols || cy >= this.rows) return
304    const i = (cy * this.cols + cx) * 3
305    const code = ch.codePointAt(0) ?? 0x20
306    this.words[i] = code > 0xffff || code < 0x20 ? 0x20 : code
307    if (fg !== undefined) this.words[i + 1] = typeof fg === 'number' ? fg : hexToInt(fg)
308    if (bg !== undefined) this.words[i + 2] = typeof bg === 'number' ? bg : hexToInt(bg)
309  }
310
311  /** Writes a string left to right, clipped to the canvas. */
312  text(x: number, y: number, s: string, fg?: string | number, bg?: string | number): void {
313    let cx = x
314    for (const ch of s) {
315      this.set(cx, y, ch, fg, bg)
316      cx++
317    }
318  }
319
320  /** Paints a cell's background only, keeping its character. */
321  paint(x: number, y: number, bg: string | number): void {
322    const cx = Math.floor(x)
323    const cy = Math.floor(y)
324    if (cx < 0 || cy < 0 || cx >= this.cols || cy >= this.rows) return
325    this.words[(cy * this.cols + cx) * 3 + 2] = typeof bg === 'number' ? bg : hexToInt(bg)
326  }
327
328  /** Two vertical pixels per cell with the upper-half block: `py` is in half-cells. */
329  pixel(x: number, py: number, color: string): void {
330    const cx = Math.floor(x)
331    const cy = Math.floor(py / 2)
332    if (cx < 0 || cy < 0 || cx >= this.cols || cy >= this.rows) return
333    const i = (cy * this.cols + cx) * 3
334    const c = hexToInt(color)
335    const isTop = Math.floor(py) % 2 === 0
336    if (this.words[i] !== 0x2580) {
337      this.words[i] = 0x2580
338      this.words[i + 1] = DEFAULT_COLOR
339      this.words[i + 2] = DEFAULT_COLOR
340    }
341    if (isTop) this.words[i + 1] = c
342    else this.words[i + 2] = c
343  }
344
345  /** The `cells` prop of a Raster. */
346  encode(): string {
347    return toBase64(new Uint8Array(this.words.buffer))
348  }
349}
350
351// ---------------------------------------------------------------------------
352// SVG for the desktop: one drawing per row (the desktop wraps siblings).
353
354export const FONT = "-apple-system,BlinkMacSystemFont,'Segoe UI',Inter,sans-serif"
355export const MONO = "ui-monospace,'Cascadia Code','SF Mono',Consolas,monospace"
356
357const XML_ESC: Record<string, string> = { '&': '&amp;', '<': '&lt;', '>': '&gt;', '"': '&quot;', "'": '&#39;' }
358
359export function xml(s: string): string {
360  return s.replace(/[&<>"']/g, c => XML_ESC[c]!)
361}
362
363/** Theme-aware classes every KOZMOS drawing shares: t text, s secondary, m muted, k track, p panel. */
364export const SVG_BASE_CSS = `
365.t{fill:#1f1f1f}.s{fill:#5f5f5c}.m{fill:#8e8e8a}.k{fill:#e7e5e0}.p{fill:#f5f4f1}.ln{stroke:#e1dfda}
366@media (prefers-color-scheme: dark){.t{fill:#ededed}.s{fill:#b4b4b0}.m{fill:#7c7c78}.k{fill:#2d2d2b}.p{fill:#232322}.ln{stroke:#363634}}
367.pulse{animation:kzp 1.6s ease-in-out infinite}@keyframes kzp{50%{opacity:.35}}
368.spin{transform-box:fill-box;transform-origin:center;animation:kzs 2s linear infinite}@keyframes kzs{to{transform:rotate(360deg)}}
369@media (prefers-reduced-motion: reduce){*{animation:none!important}}
370`
371
372export function svg(width: number, height: number, body: string, css = ''): string {
373  return `<svg xmlns="http://www.w3.org/2000/svg" width="${width}" height="${height}" viewBox="0 0 ${width} ${height}"><style>${SVG_BASE_CSS}${css}</style>${body}</svg>`
374}
375
376/** Rough width of UI text in px, for fitting labels. */
377export function textWidth(s: string, size: number): number {
378  let w = 0
379  for (const ch of s) w += (/[\s.,:;'|!il1()[\]]/.test(ch) ? 0.3 : /[A-Z@%MWmw]/.test(ch) ? 0.72 : 0.56) * size
380  return w
381}
382
383export function fitText(s: string, size: number, maxW: number): string {
384  if (textWidth(s, size) <= maxW) return s
385  let out = ''
386  for (const ch of s) {
387    if (textWidth(out + ch + '…', size) > maxW) break
388    out += ch
389  }
390  return out + '…'
391}
392
393/** A rounded progress bar as SVG markup. */
394export function svgBar(x: number, y: number, w: number, h: number, ratio: number, color: string): string {
395  const fw = Math.max(0, Math.min(w, w * clamp01(ratio)))
396  return `<rect class="k" x="${x}" y="${y}" width="${w}" height="${h}" rx="${h / 2}"/>` +
397    (fw > 0 ? `<rect x="${x}" y="${y}" width="${Math.max(h, fw)}" height="${h}" rx="${h / 2}" fill="${color}"/>` : '')
398}
399
400/** SVG text helper. */
401export function svgText(x: number, y: number, s: string, opts: { cls?: string; size?: number; weight?: number; anchor?: 'start' | 'middle' | 'end'; fill?: string; mono?: boolean } = {}): string {
402  const { cls = 't', size = 12, weight = 400, anchor = 'start', fill, mono = false } = opts
403  return `<text ${fill ? `fill="${fill}"` : `class="${cls}"`} x="${x}" y="${y}" font-family="${mono ? MONO : FONT}" font-size="${size}" font-weight="${weight}" text-anchor="${anchor}" font-variant-numeric="tabular-nums">${xml(s)}</text>`
404}
405
406/** Pixel width a desktop pane or band gives a drawing for `columns` reported columns. */
407export function pxOf(columns: number | undefined, fallback = 60, slack = 8): number {
408  return Math.max(200, Math.min(1600, (columns || fallback) * 8 - slack))
409}
410
411// ---------------------------------------------------------------------------
412// Prices, USD per million tokens: input, output, cache read, cache write (5 min).
413// Anthropic first-party rates as of 2026-10. Used only where the engine reports
414// tokens and not money (a subagent's own spend); the session total comes from
415// $.session.usage().cost, which is the engine's.
416
417const PRICES: [RegExp, [number, number, number, number]][] = [
418  [/fable|mythos/i, [10, 50, 0.25, 12.5]],
419  [/opus-5-5/i, [4, 20, 0.2, 5]],
420  [/opus/i, [5, 25, 0.5, 6.25]],
421  [/sonnet-5/i, [2, 10, 0.2, 2.5]],
422  [/sonnet/i, [3, 15, 0.3, 3.75]],
423  [/haiku-5/i, [0.1, 0.5, 0.01, 0.125]],
424  [/haiku/i, [1, 5, 0.1, 1.25]],
425]
426
427export type Usage = {
428  input_tokens?: number
429  output_tokens?: number
430  cache_read_input_tokens?: number
431  cache_creation_input_tokens?: number
432}
433
434export function priceOf(model: string): [number, number, number, number] {
435  return PRICES.find(([re]) => re.test(model))?.[1] ?? [4, 20, 0.2, 5]
436}
437
438export function costOf(model: string, u: Usage | null | undefined): number {
439  if (!u) return 0
440  const [i, o, r, w] = priceOf(model)
441  return ((u.input_tokens ?? 0) * i + (u.output_tokens ?? 0) * o + (u.cache_read_input_tokens ?? 0) * r + (u.cache_creation_input_tokens ?? 0) * w) / 1e6
442}
443
444export function tokensOf(u: Usage | null | undefined): number {
445  if (!u) return 0
446  return (u.input_tokens ?? 0) + (u.output_tokens ?? 0) + (u.cache_read_input_tokens ?? 0) + (u.cache_creation_input_tokens ?? 0)
447}
448
449/** The context a request filled: everything it read plus what it wrote. */
450export function contextOf(u: Usage | null | undefined): number {
451  return tokensOf(u)
452}
453
454export function windowOf(model: string): number {
455  return /haiku-4/i.test(model) ? 200_000 : 1_000_000
456}
457
458// ---------------------------------------------------------------------------
459// Rate limits.
460
461export type Limit = { kind: string; percentUsed: number; resetsAt?: string }
462
463export function limitLabel(kind: string): string {
464  if (kind === 'five_hour') return '5h'
465  if (kind === 'seven_day') return '7d'
466  if (kind === 'spend_limit') return '$'
467  return kind.replace(/_/g, ' ')
468}
469
470/** Milliseconds until a window resets, or undefined. */
471export function untilReset(l: Limit, now: number): number | undefined {
472  if (!l.resetsAt) return undefined
473  const t = Date.parse(l.resetsAt)
474  return Number.isFinite(t) ? Math.max(0, t - now) : undefined
475}
476
477/** The length of a window in ms, for burn-rate math. */
478export function windowMs(kind: string): number | undefined {
479  if (kind === 'five_hour') return 5 * 3600_000
480  if (kind === 'seven_day') return 7 * 24 * 3600_000
481  return undefined
482}
483
484// ---------------------------------------------------------------------------
485// Tool calls, described in a few words.
486
487/** What a tool call is about: the command, the file, the pattern, the agent's task. */
488export function toolDetail(tool: string, input: unknown): string {
489  const e = (input ?? {}) as Record<string, unknown>
490  const s = (k: string) => (typeof e[k] === 'string' ? (e[k] as string) : '')
491  const t = String(tool)
492  if (t === 'Bash' || t === 'PowerShell') return clip(s('description') || s('command'), 60)
493  if (s('file_path')) return baseName(s('file_path'))
494  if (s('notebook_path')) return baseName(s('notebook_path'))
495  if (t === 'Agent') return clip(s('description') || s('subagent_type'), 60)
496  if (s('pattern')) return clip(s('pattern'), 60)
497  if (s('url')) return clip(s('url').replace(/^https?:\/\//, ''), 60)
498  if (s('query')) return clip(s('query'), 60)
499  if (s('subject')) return clip(s('subject'), 60)
500  if (Array.isArray(e.todos)) return `${(e.todos as unknown[]).length} todos`
501  if (t.startsWith('mcp__')) return t.split('__').slice(1).join(' · ')
502  return ''
503}
504
505/** `mcp__server__tool` → `server·tool`; built-ins unchanged. */
506export function toolName(tool: string): string {
507  const t = String(tool)
508  return t.startsWith('mcp__') ? t.split('__').slice(1).join('·') : t
509}
510

1// GENERATED by scripts/sync-shared.mjs from shared/probe.ts. Do not edit here.
2// KOZMOS shared probes: git and the machine, as argv lists and pure parsers.
3// Source of truth: shared/probe.ts; synced into each mod as hooks/lib/probe.ts.
4//
5// The engine only lets `$` flow into functions declared in the hooks file
6// itself, never across an import. So this file never touches `$`: a mod runs
7// the argv with `$.process.run` (or reads the path with `$.fs.read`) in a
8// top-level function of its own and hands the text to a parser here:
9//
10//   async function readGit($: EngineInterface, cwd: string): Promise<GitSnap> {
11//     const st = await $.process.run(GIT_STATUS, { cwd, timeoutMs: 5000 }).catch(() => undefined)
12//     if (!st || st.exitCode !== 0) return NO_GIT
13//     const head = await $.process.run(GIT_HEAD, { cwd, timeoutMs: 3000 }).catch(() => undefined)
14//     return parseGitStatus(st.stdout, head?.exitCode === 0 ? head.stdout : '')
15//   }
16
17export type Platform = 'win' | 'mac' | 'linux'
18
19/** From `$.env.get('OS')` and, off Windows, `uname -s`. */
20export function platformFrom(osEnv: string | undefined, uname: string | undefined): Platform {
21  if (/windows/i.test(osEnv ?? '')) return 'win'
22  return /darwin/i.test(uname ?? '') ? 'mac' : 'linux'
23}
24
25// ---------------------------------------------------------------------------
26// Git.
27
28export const GIT_STATUS = ['git', 'status', '--porcelain=v2', '--branch', '--show-stash'] as const
29export const GIT_HEAD = ['git', 'log', '-1', '--format=%h%x09%s%x09%cr'] as const
30export const gitLogArgv = (n: number): string[] => ['git', 'log', `-${n}`, '--format=%h%x09%s%x09%cr%x09%an%x09%ct']
31export const GIT_NUMSTAT = ['git', 'diff', '--numstat', 'HEAD'] as const
32
33export type GitSnap = {
34  isRepo: boolean
35  branch: string
36  isDetached: boolean
37  upstream?: string
38  ahead: number
39  behind: number
40  staged: number
41  unstaged: number
42  untracked: number
43  conflicts: number
44  head?: { sha: string; subject: string; when: string }
45  stash: number
46}
47
48export const NO_GIT: GitSnap = { isRepo: false, branch: '', isDetached: false, ahead: 0, behind: 0, staged: 0, unstaged: 0, untracked: 0, conflicts: 0, stash: 0 }
49
50/** Parses `GIT_STATUS` output, and `GIT_HEAD` output when given. */
51export function parseGitStatus(status: string, headLine = ''): GitSnap {
52  const snap: GitSnap = { ...NO_GIT, isRepo: true }
53  for (const line of status.split('\n')) {
54    if (line.startsWith('# branch.head ')) {
55      const b = line.slice(14).trim()
56      snap.isDetached = b === '(detached)'
57      snap.branch = b
58    } else if (line.startsWith('# branch.upstream ')) snap.upstream = line.slice(18).trim()
59    else if (line.startsWith('# branch.ab ')) {
60      const m = /\+(\d+) -(\d+)/.exec(line)
61      snap.ahead = Number(m?.[1] ?? 0)
62      snap.behind = Number(m?.[2] ?? 0)
63    } else if (line.startsWith('# stash ')) snap.stash = Number(line.slice(8)) || 0
64    else if (line.startsWith('1 ') || line.startsWith('2 ')) {
65      const xy = line.slice(2, 4)
66      if (xy[0] !== '.') snap.staged++
67      if (xy[1] !== '.') snap.unstaged++
68    } else if (line.startsWith('u ')) snap.conflicts++
69    else if (line.startsWith('? ')) snap.untracked++
70  }
71  const h = headLine.trim()
72  if (h) {
73    const [sha, subject = '', when = ''] = h.split('\t') as [string, ...string[]]
74    snap.head = { sha, subject, when }
75  }
76  if (snap.isDetached && snap.head) snap.branch = snap.head.sha
77  return snap
78}
79
80export type GitCommit = { sha: string; subject: string; when: string; author: string; at: number }
81
82/** Parses `gitLogArgv(n)` output. `at` is the commit time in ms. */
83export function parseGitLog(out: string): GitCommit[] {
84  return out
85    .split('\n')
86    .filter(Boolean)
87    .map(l => {
88      const [sha, subject = '', when = '', author = '', ct = '0'] = l.split('\t') as [string, ...string[]]
89      return { sha, subject, when, author, at: Number(ct) * 1000 }
90    })
91}
92
93export type GitFileStat = { path: string; added: number; removed: number }
94
95/** Parses `GIT_NUMSTAT` output (binary files count as 0/0). */
96export function parseNumstat(out: string): GitFileStat[] {
97  return out
98    .split('\n')
99    .filter(Boolean)
100    .map(l => {
101      const [a, d = '0', ...rest] = l.split('\t') as [string, ...string[]]
102      return { path: rest.join('\t'), added: Number(a) || 0, removed: Number(d) || 0 }
103    })
104}
105
106// ---------------------------------------------------------------------------
107// The machine.
108
109export type SysSnap = {
110  cpu?: number // percent, all cores
111  memUsed?: number // bytes
112  memTotal?: number // bytes
113  diskUsed?: number
114  diskTotal?: number
115  procs?: number
116  gpu?: GpuSnap
117}
118
119export type GpuSnap = { util: number; memUsed: number; memTotal: number; temp: number; name: string }
120
121/** Windows: one PowerShell call answering CPU, memory, C: and process count as JSON. */
122export const WIN_SYS = [
123  'powershell', '-NoProfile', '-NonInteractive', '-Command',
124  '$o=Get-CimInstance Win32_OperatingSystem;' +
125    '$c=(Get-CimInstance Win32_Processor | Measure-Object -Property LoadPercentage -Average).Average;' +
126    "$d=Get-CimInstance Win32_LogicalDisk -Filter \"DeviceID='C:'\";" +
127    '$p=(Get-Process).Count;' +
128    '[pscustomobject]@{cpu=$c;free=$o.FreePhysicalMemory;total=$o.TotalVisibleMemorySize;dfree=$d.FreeSpace;dsize=$d.Size;procs=$p} | ConvertTo-Json -Compress',
129] as const
130
131export function parseWinSys(out: string): SysSnap {
132  const snap: SysSnap = {}
133  try {
134    const j = JSON.parse(out || '{}') as Record<string, number | null>
135    if (typeof j.cpu === 'number') snap.cpu = j.cpu
136    if (typeof j.total === 'number' && typeof j.free === 'number') {
137      snap.memTotal = j.total * 1024
138      snap.memUsed = (j.total - j.free) * 1024
139    }
140    if (typeof j.dsize === 'number' && typeof j.dfree === 'number') {
141      snap.diskTotal = j.dsize
142      snap.diskUsed = j.dsize - j.dfree
143    }
144    if (typeof j.procs === 'number') snap.procs = j.procs
145  } catch {
146    // Leave the fields out.
147  }
148  return snap
149}
150
151export type CpuTicks = { idle: number; total: number }
152
153/** Linux: `/proc/stat`'s first line, against the previous reading. */
154export function parseProcStat(stat: string, prev: CpuTicks | undefined): { cpu?: number; ticks: CpuTicks } {
155  const nums = stat.split('\n')[0]!.trim().split(/\s+/).slice(1).map(Number)
156  const idle = (nums[3] ?? 0) + (nums[4] ?? 0)
157  const total = nums.reduce((a, b) => a + (Number.isFinite(b) ? b : 0), 0)
158  const ticks = { idle, total }
159  if (!prev || total <= prev.total) return { ticks }
160  return { cpu: 100 * (1 - (idle - prev.idle) / (total - prev.total)), ticks }
161}
162
163/** Linux: `/proc/meminfo`. */
164export function parseMeminfo(mem: string): Pick<SysSnap, 'memUsed' | 'memTotal'> {
165  const kb = (k: string) => Number(new RegExp(`${k}:\\s+(\\d+)`).exec(mem)?.[1] ?? 0) * 1024
166  const memTotal = kb('MemTotal')
167  return memTotal ? { memTotal, memUsed: memTotal - kb('MemAvailable') } : {}
168}
169
170/** macOS: `top -l 1 -n 0` and `sysctl -n hw.memsize`. */
171export const MAC_TOP = ['top', '-l', '1', '-n', '0'] as const
172export const MAC_MEMSIZE = ['sysctl', '-n', 'hw.memsize'] as const
173
174export function parseMacTop(top: string, memsize: string): SysSnap {
175  const snap: SysSnap = {}
176  const m = /CPU usage: ([\d.]+)% user, ([\d.]+)% sys/.exec(top)
177  if (m) snap.cpu = Number(m[1]) + Number(m[2])
178  const pm = /PhysMem: ([\d.]+)([GM]) used/.exec(top)
179  if (pm) snap.memUsed = Number(pm[1]) * (pm[2] === 'G' ? 1024 ** 3 : 1024 ** 2)
180  const total = Number(memsize.trim())
181  if (total) snap.memTotal = total
182  return snap
183}
184
185/** NVIDIA GPUs, any platform. */
186export const NVIDIA_SMI = ['nvidia-smi', '--query-gpu=utilization.gpu,memory.used,memory.total,temperature.gpu,name', '--format=csv,noheader,nounits'] as const
187
188export function parseNvidia(out: string): GpuSnap | undefined {
189  const line = out.split('\n')[0]!
190  if (!line.trim()) return undefined
191  const [util, used = '0', total = '0', temp = '0', name = 'GPU'] = line.split(',').map(s => s.trim()) as [string, ...string[]]
192  return { util: Number(util), memUsed: Number(used) * 1024 ** 2, memTotal: Number(total) * 1024 ** 2, temp: Number(temp), name }
193}
194
195export function fmtBytes(n: number | undefined): string {
196  if (n === undefined || !Number.isFinite(n)) return '—'
197  // Each unit starts where the one below would round up to 1024 of itself.
198  if (n >= 1023.95 * 1024 ** 3) return `${(n / 1024 ** 4).toFixed(1)}T`
199  if (n >= 1023.5 * 1024 ** 2) return `${(n / 1024 ** 3).toFixed(1)}G`
200  if (n >= 1023.5 * 1024) return `${Math.round(n / 1024 ** 2)}M`
201  return `${Math.round(n / 1024)}K`
202}
203

1export type CompassSnap = {
2  /** The five-hour window, when the subscription reports one. */
3  fiveHour?: { percent: number; resetsAt?: string }
4  ctxPercent?: number
5  agentsRunning: number
6  isRepo: boolean
7  /** Staged, unstaged and untracked paths together. */
8  changedFiles: number
9  /** Edit / Write calls this session, any loop. */
10  edits: number
11  /** Whole minutes since the last turn started or ended. */
12  idleMin: number
13  /** $.clock.now() at the last whole minute, for reset countdowns. */
14  now: number
15}
16
17declare module 'claude-code' {
18  interface PluginState {
19    compass: { snap: CompassSnap; isOn: boolean }
20  }
21}
22