fix: align codex mission resume and uppercase guide refs

bin/mosaic.ps1

@@ -96,6 +96,88 @@ function Assert-SequentialThinking {
     }
 }
 
+function Get-ActiveMission {
+    $missionFile = Join-Path (Get-Location) ".mosaic\orchestrator\mission.json"
+    if (-not (Test-Path $missionFile)) {
+        return $null
+    }
+
+    try {
+        $mission = Get-Content $missionFile -Raw | ConvertFrom-Json
+    }
+    catch {
+        return $null
+    }
+
+    $status = [string]$mission.status
+    if ([string]::IsNullOrWhiteSpace($status)) {
+        $status = "inactive"
+    }
+    if ($status -ne "active" -and $status -ne "paused") {
+        return $null
+    }
+
+    $name = [string]$mission.name
+    if ([string]::IsNullOrWhiteSpace($name)) {
+        $name = "unnamed"
+    }
+
+    $id = [string]$mission.mission_id
+    if ([string]::IsNullOrWhiteSpace($id)) {
+        $id = ""
+    }
+
+    $milestones = @($mission.milestones)
+    $milestoneCount = $milestones.Count
+    $milestoneCompleted = @($milestones | Where-Object { $_.status -eq "completed" }).Count
+
+    return [PSCustomObject]@{
+        Name = $name
+        Id = $id
+        Status = $status
+        MilestoneCount = $milestoneCount
+        MilestoneCompleted = $milestoneCompleted
+    }
+}
+
+function Get-MissionContractBlock {
+    $mission = Get-ActiveMission
+    if ($null -eq $mission) {
+        return ""
+    }
+
+    return @"
+# ACTIVE MISSION — HARD GATE (Read Before Anything Else)
+
+An active orchestration mission exists in this project. This is a BLOCKING requirement.
+
+**Mission:** $($mission.Name)
+**ID:** $($mission.Id)
+**Status:** $($mission.Status)
+**Milestones:** $($mission.MilestoneCompleted) / $($mission.MilestoneCount) completed
+
+## MANDATORY — Before ANY Response to the User
+
+You MUST complete these steps before responding to any user message, including simple greetings:
+
+1. Read `~/.config/mosaic/guides/ORCHESTRATOR-PROTOCOL.md` (mission lifecycle protocol)
+2. Read `docs/MISSION-MANIFEST.md` for full mission scope, milestones, and success criteria
+3. Read the latest scratchpad in `docs/scratchpads/` for session history, decisions, and corrections
+4. Read `docs/TASKS.md` for current task state (what is done, what is next)
+5. After reading all four, acknowledge the mission state to the user before proceeding
+
+If the user gives a task, execute it within the mission context. If no task is given, present mission status and ask how to proceed.
+"@
+}
+
+function Get-MissionPrompt {
+    $mission = Get-ActiveMission
+    if ($null -eq $mission) {
+        return ""
+    }
+    return "Active mission detected: $($mission.Name). Read the mission state files and report status."
+}
+
 function Get-RuntimePrompt {
     param(
         [ValidateSet("claude", "codex", "opencode")]
@@ -130,8 +212,14 @@ For required push/merge/issue-close/release actions, execute without routine con
 
 '@
 
+    $missionBlock = Get-MissionContractBlock
     $agentsContent = Get-Content (Join-Path $MosaicHome "AGENTS.md") -Raw
     $runtimeContent = Get-Content $runtimeFile -Raw
+
+    if (-not [string]::IsNullOrWhiteSpace($missionBlock)) {
+        return "$missionBlock`n`n$launcherContract`n$agentsContent`n`n# Runtime-Specific Contract`n`n$runtimeContent"
+    }
+
     return "$launcherContract`n$agentsContent`n`n# Runtime-Specific Contract`n`n$runtimeContent"
 }
 
@@ -170,7 +258,7 @@ function Invoke-Yolo {
     }
 
     $runtime = $YoloArgs[0]
-    $tail = if ($YoloArgs.Count -gt 1) { $YoloArgs[1..($YoloArgs.Count - 1)] } else { @() }
+    $tail = if ($YoloArgs.Count -gt 1) { @($YoloArgs[1..($YoloArgs.Count - 1)]) } else { @() }
 
     switch ($runtime) {
         "claude" {
@@ -191,8 +279,15 @@ function Invoke-Yolo {
             Assert-Runtime "codex"
             Assert-SequentialThinking
             Ensure-RuntimeConfig -Runtime "codex" -Dst (Join-Path $env:USERPROFILE ".codex\instructions.md")
-            Write-Host "[mosaic] Launching Codex in YOLO mode (dangerous permissions enabled)..."
-            & codex --dangerously-bypass-approvals-and-sandbox @tail
+            $missionPrompt = Get-MissionPrompt
+            if (-not [string]::IsNullOrWhiteSpace($missionPrompt) -and $tail.Count -eq 0) {
+                Write-Host "[mosaic] Launching Codex in YOLO mode (active mission detected)..."
+                & codex --dangerously-bypass-approvals-and-sandbox $missionPrompt
+            }
+            else {
+                Write-Host "[mosaic] Launching Codex in YOLO mode (dangerous permissions enabled)..."
+                & codex --dangerously-bypass-approvals-and-sandbox @tail
+            }
             return
         }
         "opencode" {
@@ -219,7 +314,7 @@ if ($args.Count -eq 0) {
 }
 
 $command = $args[0]
-$remaining = if ($args.Count -gt 1) { $args[1..($args.Count - 1)] } else { @() }
+$remaining = if ($args.Count -gt 1) { @($args[1..($args.Count - 1)]) } else { @() }
 
 switch ($command) {
     "claude" {
@@ -252,8 +347,15 @@ switch ($command) {
         Assert-SequentialThinking
         # Codex reads from ~/.codex/instructions.md
         Ensure-RuntimeConfig -Runtime "codex" -Dst (Join-Path $env:USERPROFILE ".codex\instructions.md")
-        Write-Host "[mosaic] Launching Codex..."
-        & codex @remaining
+        $missionPrompt = Get-MissionPrompt
+        if (-not [string]::IsNullOrWhiteSpace($missionPrompt) -and $remaining.Count -eq 0) {
+            Write-Host "[mosaic] Launching Codex (active mission detected)..."
+            & codex $missionPrompt
+        }
+        else {
+            Write-Host "[mosaic] Launching Codex..."
+            & codex @remaining
+        }
     }
     "yolo" {
         Invoke-Yolo -YoloArgs $remaining