Fix snippet expansion: strip ASR punctuation and reorder pipeline

Two issues prevented snippet triggers from matching:

1. Voxtral adds trailing punctuation (e.g., "Snippet email
   signature.") which made the trigger comparison fail. Now strip
   punctuation from both the lowered command and the extracted
   trigger before matching.

2. Replacements ran before snippet resolution, so a replacement
   could corrupt a command prefix or trigger word. Now snippets
   are checked first on the raw text. If a snippet matches, skip
   replacements on the expanded content.

Made-with: Cursor

Author: seyeong-han

voxtral_realtime/macos/VoxtralRealtime/Services/TextPipeline.swift

@@ -57,12 +57,15 @@ final class TextPipeline {
             baseText = trimmed
         }
 
-        let replacementsApplied = applyReplacements(to: baseText)
-        let snippetResolution = resolveSnippet(in: replacementsApplied, allowExpansion: context == .dictation && !literalCommand)
-        let styleApplied = applyStyle(to: snippetResolution.text)
+        let snippetResolution = resolveSnippet(in: baseText, allowExpansion: context == .dictation && !literalCommand)
+        let afterSnippets = snippetResolution.text
+        let replacementsApplied = snippetResolution.usedSnippetIDs.isEmpty
+            ? applyReplacements(to: afterSnippets)
+            : afterSnippets
+        let styleApplied = applyStyle(to: replacementsApplied)
 
         var tags: [String] = []
-        if replacementsApplied != baseText {
+        if replacementsApplied != afterSnippets {
             tags.append("replacement")
         }
         if !snippetResolution.usedSnippetIDs.isEmpty {
@@ -145,10 +148,13 @@ final class TextPipeline {
 
         let normalized = text.trimmingCharacters(in: .whitespacesAndNewlines)
         let lowered = normalized.lowercased()
+            .trimmingCharacters(in: .punctuationCharacters)
         let commandPrefixes = ["insert snippet ", "snippet ", "template "]
 
         for prefix in commandPrefixes where lowered.hasPrefix(prefix) {
-            let requestedTrigger = String(normalized.dropFirst(prefix.count)).trimmingCharacters(in: .whitespacesAndNewlines)
+            let requestedTrigger = String(lowered.dropFirst(prefix.count))
+                .trimmingCharacters(in: .whitespacesAndNewlines)
+                .trimmingCharacters(in: .punctuationCharacters)
             if let snippet = snippetStore.snippets.first(where: {
                 $0.isEnabled && $0.trigger.compare(requestedTrigger, options: .caseInsensitive) == .orderedSame
             }) {