feat(deploy): add sync and push scripts for CI/CD

deploy/README.md

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+# Deploy — audio-voice-converter
+
+اسکریپت‌های CI/CD پروژه `audio-voice-converter`.
+
+## ساختار
+
+```
+deploy/
+├── README.md          ← این فایل
+└── scripts/
+    ├── sync.ps1       ← کپی فایل‌ها از source به repo
+    └── push.ps1       ← git commit + push به Gitea
+```
+
+## پیش‌نیازها
+
+- متغیر محیطی `AUDIO_SOURCE_ROOT` تنظیم شده باشه (مسیر پوشه‌ی source)
+- دسترسی git به remote (credential یا SSH key)
+
+```powershell
+$env:AUDIO_SOURCE_ROOT = "D:\projects\google_meet_captions"
+```
+
+## استفاده
+
+```powershell
+# فقط sync (کپی فایل‌ها بدون push)
+.\scripts\sync.ps1
+
+# sync + commit + push
+.\scripts\sync.ps1 | .\scripts\push.ps1
+
+# یا مستقیم push (اگر sync قبلاً انجام شده)
+.\scripts\push.ps1
+```
+
+## جریان کلی
+
+```
+source dirs  →  sync.ps1  →  repo files  →  push.ps1  →  Gitea
+```

deploy/scripts/push.ps1

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+<#
+.SYNOPSIS
+  Git commit + push to Gitea (no sensitive data; credentials come from git config or env).
+
+.DESCRIPTION
+  Stages all changes, commits with a timestamp message, and force-pushes to origin/main.
+  Run from the repo root or any subdirectory.
+
+  Remote URL is whatever `git remote get-url origin` returns — configure it once:
+    git remote set-url origin https://<user>@<host>/arash/audio-voice-converter.git
+
+.PARAMETER Message
+  Optional commit message. Defaults to "chore: sync extension files <timestamp>".
+
+.PARAMETER DryRun
+  Show what would be committed/pushed without actually doing it.
+
+.EXAMPLE
+  .\deploy\scripts\push.ps1
+  .\deploy\scripts\push.ps1 -Message "feat: update popup UI"
+  .\deploy\scripts\push.ps1 -DryRun
+#>
+[CmdletBinding()]
+param(
+    [string]$Message,
+    [switch]$DryRun
+)
+
+$ErrorActionPreference = "Stop"
+
+# Navigate to repo root (2 levels up from deploy/scripts/)
+$repoRoot = Split-Path (Split-Path $PSScriptRoot)
+Set-Location $repoRoot
+
+$status = git status --porcelain
+if (-not $status) {
+    Write-Host "Nothing to commit."
+    exit 0
+}
+
+$msg = if ($Message) { $Message } else { "chore: sync extension files $(Get-Date -Format 'yyyy-MM-dd HH:mm')" }
+
+Write-Host "Changes to commit:"
+git status --short
+
+if ($DryRun) {
+    Write-Host "[DryRun] Would commit: $msg"
+    Write-Host "[DryRun] Would push: origin main (force)"
+    exit 0
+}
+
+git add .
+git commit -m $msg
+git push --force origin main
+
+Write-Host "Push complete."

deploy/scripts/sync.ps1

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+<#
+.SYNOPSIS
+  Sync extension source files into this repo (no git operations).
+
+.DESCRIPTION
+  Copies the latest files from the source directories into the repo.
+  Source root is read from $env:AUDIO_SOURCE_ROOT (no sensitive data in this script).
+
+  Source layout expected under $env:AUDIO_SOURCE_ROOT:
+    Google Meet Transcripts & AI Summary/   -> google-meet-transcripts-extension/
+    caption-extension/                       -> caption-extension/
+
+.EXAMPLE
+  $env:AUDIO_SOURCE_ROOT = "D:\projects\google_meet_captions"
+  .\deploy\scripts\sync.ps1
+#>
+[CmdletBinding()]
+param()
+
+$ErrorActionPreference = "Stop"
+
+$sourceRoot = $env:AUDIO_SOURCE_ROOT
+if (-not $sourceRoot) {
+    Write-Error "Set `$env:AUDIO_SOURCE_ROOT` to the google_meet_captions folder before running."
+}
+
+$repoRoot = Split-Path (Split-Path $PSScriptRoot)   # deploy/scripts -> repo root
+
+$mappings = @(
+    @{
+        From = Join-Path $sourceRoot "Google Meet Transcripts & AI Summary"
+        To   = Join-Path $repoRoot "google-meet-transcripts-extension"
+    },
+    @{
+        From = Join-Path $sourceRoot "caption-extension"
+        To   = Join-Path $repoRoot "caption-extension"
+    }
+)
+
+foreach ($m in $mappings) {
+    if (-not (Test-Path $m.From)) {
+        Write-Warning "Source not found, skipping: $($m.From)"
+        continue
+    }
+    Write-Host "Syncing $($m.From) -> $($m.To)"
+    New-Item -ItemType Directory -Force -Path $m.To | Out-Null
+    Copy-Item "$($m.From)\*" $m.To -Recurse -Force
+}
+
+Write-Host "Sync complete."