Phase 14c: Fix FIX-31 whitespace bug + fix misleading log truncation

FIX-31: .rstrip() before checking trailing punct regex — model may
output trailing whitespace after hallucinated dots, breaking the
dollar-sign anchor.

Log fix: Grammar and Punctuation service logs were hardcoding '...'
after [:80] truncation even for short texts. This made it appear
that the models were adding ellipsis when they weren't. Now only
appends '...' when text is actually >80 chars.

src/app.py

@@ -1531,11 +1531,15 @@ def analyze_text():
                 # ── Phase 14 (FIX-31): Strip hallucinated trailing punctuation ──
                 # The AraSpell model sometimes hallucinates trailing '...' or '.'
                 # that weren't in the input. Strip them to prevent dot accumulation.
+                # NOTE: Must .rstrip() first — model may add trailing whitespace
+                # after dots, breaking the $ anchor.
                 import re as _re_strip
-                _input_trailing = _re_strip.search(r'[\.،؛؟!]+$', current_text)
-                _output_trailing = _re_strip.search(r'[\.،؛؟!]+$', raw_corrected)
+                _rc_stripped = raw_corrected.rstrip()
+                _ct_stripped = current_text.rstrip()
+                _input_trailing = _re_strip.search(r'[\.،؛؟!]+$', _ct_stripped)
+                _output_trailing = _re_strip.search(r'[\.،؛؟!]+$', _rc_stripped)
                 if _output_trailing and not _input_trailing:
-                    raw_corrected = raw_corrected[:_output_trailing.start()]
+                    raw_corrected = _rc_stripped[:_output_trailing.start()]
                     logger.info(
                         f"[SPELLING] Stripped hallucinated trailing punct: "
                         f"'{_output_trailing.group()}'"
@@ -1543,7 +1547,7 @@ def analyze_text():
                 elif _output_trailing and _input_trailing:
                     # If input had some trailing punct, preserve only what was there
                     if len(_output_trailing.group()) > len(_input_trailing.group()):
-                        raw_corrected = raw_corrected[:_output_trailing.start()] + _input_trailing.group()
+                        raw_corrected = _rc_stripped[:_output_trailing.start()] + _input_trailing.group()
                         logger.info(
                             f"[SPELLING] Trimmed extra trailing punct: "
                             f"'{_output_trailing.group()}' → '{_input_trailing.group()}'"

src/nlp/grammar/grammar_service.py

@@ -98,7 +98,9 @@ class GrammarChecker:
                 text=text,
                 api_name="/correct_grammar"
             )
-            logger.info(f"Grammar model output: '{model_output[:80]}...' (input: '{text[:80]}...')")
+            _mo_display = model_output[:80] + ('...' if len(model_output) > 80 else '')
+            _ti_display = text[:80] + ('...' if len(text) > 80 else '')
+            logger.info(f"Grammar model output: '{_mo_display}' (input: '{_ti_display}')")
 
             if not model_output or not model_output.strip():
                 logger.warning("Grammar model returned empty output, returning original")

src/nlp/punctuation/punctuation_service.py

@@ -214,7 +214,9 @@ class PunctuationChecker:
                 processed_paragraphs.append(cleaned)
 
             result = "\n\n".join(processed_paragraphs)
-            logger.info(f"Punctuation output: '{result[:80]}...' (input: '{text[:80]}...')")
+            _r_display = result[:80] + ('...' if len(result) > 80 else '')
+            _t_display = text[:80] + ('...' if len(text) > 80 else '')
+            logger.info(f"Punctuation output: '{_r_display}' (input: '{_t_display}')")
             return result
 
         except Exception as e: