feat(matlab): print full native fitlme/fitglme summary in every scenario

Add tdcs_model_summary as the single place that renders a fitted model
verbatim (disp(model) with the Command-Window <strong> markup stripped),
and route every report through it so all scenarios emit the complete
model-fitting output:

- tdcs_report: adds the learning-rate GLMM's full summary (count/rate
  already had theirs); localCleanDisp now delegates to the shared helper.
- tdcs_lme_report / tdcs_paper_lme: embed the full fitlme summary before
  the curated effect table.
- tdcs_phase_lme: appends each phase's full fitlme summary.

Tests: tReport asserts 3 native summaries in a GLMM report; tLme asserts
the lme_*/paper_*/phase_* reports embed 1/1/3 summaries with markup
stripped. Suite 39/39.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

analysis/matlab/tests/tReport.m

@@ -28,6 +28,10 @@ classdef tReport < matlab.unittest.TestCase
             testCase.verifyTrue(contains(txt, 'CAVEATS'));
             % Command-Window-only markup must be stripped from the report.
             testCase.verifyFalse(contains(txt, '<strong>'));
+            % Full native GLMM summary is present for all three models
+            % (count, rate, learning-rate): each disp() prints this header.
+            testCase.verifyEqual(count(txt, 'Fixed effects coefficients (95% CIs):'), 3, ...
+                'Expected the full fitglme summary for count, rate, and learning GLMMs.');
         end
 
         function testUnmergedScenarioIncludesClassification(testCase)