feat(tools): converge two-tier Quick/Pro selector onto .no fork

Port the dobetterlegal-tools two-tier quality stack to dobetternorge.no:
QUALITY_TIERS registry + resolveTier (ToolModels), dbnToolsResolveToolRun
(bootstrap), tier read+charge in the 6 analytical endpoints, Quick/Pro
UI + payload.tier on the 6 tool pages/JS, and the bounded
corpusContextForSummarize RAG fix (per-passage trim + total budget +
reranker_enabled). Back-compat: requests without `tier` keep legacy
engine behavior.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

assets/js/summarize.js

@@ -179,13 +179,13 @@
             return;
         }
 
-        var engine = (document.querySelector('input[name="sumEngine"]:checked') || {}).value || 'azure_mini';
+        var tier = (document.querySelector('input[name="sumTier"]:checked') || {}).value || 'quick';
         var slices = activeSlices();
 
         var payload = {
             text:     combined,
             language: _currentLang,
-            engine:   engine,
+            tier:     tier,
             depth:    (document.querySelector('input[name="sumDepth"]:checked') || {}).value || 'standard',
             slices:   slices,
         };