fix(hopper): satisfy codespell on think-tier keyword regex

Expand architect(?:ure|ural)? to explicit words so codespell does not flag "ure".

Co-authored-by: Cursor <cursoragent@cursor.com>

Author: agentpike

cecli/hopper/router.py

@@ -93,7 +93,7 @@ def normalize_keep_alive_for_tier(tier: RouteTier | RouteRole, value: int | str)
 # Intent signals (case-insensitive word boundaries).
 _THINK_PATTERNS = re.compile(
     r"\b("
-    r"architect(?:ure|ural)?|refactor|rewrite|migrate|migration|"
+    r"architecture|architectural|architect|refactor|rewrite|migrate|migration|"
     r"race\s+condition|deadlock|concurrency|distributed|microservice|"
     r"security|vulnerability|root\s+cause|design\s+review|"
     r"performance|scalability|profil(?:e|ing)|"