feat: persist compact session state

shared/hooks/scripts/Record-Compact.ps1

@@ -0,0 +1,7 @@
+[CmdletBinding()]
+param()
+$root = Split-Path (Split-Path $PSScriptRoot -Parent) -Parent
+$stateDir = Join-Path $root '.ai-session'
+New-Item $stateDir -ItemType Directory -Force | Out-Null
+('{"event":"compact","timestamp":"' + (Get-Date).ToUniversalTime().ToString('o') + '"}') | Add-Content (Join-Path $stateDir 'telemetry.jsonl')
+exit 0

shared/hooks/scripts/Show-SessionStatePointer.ps1

@@ -0,0 +1,4 @@
+[CmdletBinding()]
+param()
+$root = Split-Path (Split-Path $PSScriptRoot -Parent) -Parent
+if (Test-Path (Join-Path $root '.ai-session/state.json')) { Write-Output 'Task state is available in .ai-session/state.json; read it only if needed.' }

shared/hooks/scripts/record-compact.sh

@@ -0,0 +1,5 @@
+#!/usr/bin/env bash
+set -euo pipefail
+root=$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")/../.." && pwd)
+mkdir -p "$root/.ai-session"
+printf '{"event":"compact","timestamp":"%s"}\n' "$(date -u +%Y-%m-%dT%H:%M:%SZ)" >> "$root/.ai-session/telemetry.jsonl"

shared/hooks/scripts/show-session-state-pointer.sh

@@ -0,0 +1,4 @@
+#!/usr/bin/env bash
+set -euo pipefail
+root=$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")/../.." && pwd)
+[ -f "$root/.ai-session/state.json" ] && printf 'Task state is available in .ai-session/state.json; read it only if needed.\n'