fix(wtv,encoding): Fix WTV timing and Latin-1 music note encoding

WTV timing fix:
- Set min_pts on first valid timestamp to enable fts_now calculation
- Set pts_set = 2 (MinPtsSet) instead of 1 (Received)
- This fixes WTV files where all timestamps were clustered around 1 second
  instead of being spread across the actual video duration

Latin-1 encoding fix:
- Change music note substitution from pilcrow (0xB6) to '#' (0x23)
- Pilcrow caused grep to treat output files as binary
- '#' is a more recognizable substitute for the musical note character

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: cfsmp3

src/lib_ccx/wtv_functions.c

@@ -436,8 +436,15 @@ LLONG get_data(struct lib_ccx_ctx *ctx, struct wtv_chunked_buffer *cb, struct de
 			dbg_print(CCX_DMT_PARSE, "TIME: %ld\n", time);
 			if (time != -1 && time != WTV_CC_TIMESTAMP_MAGIC)
 			{ // Ignore -1 timestamps
-				set_current_pts(dec_ctx->timing, time_to_pes_time(time));
-				dec_ctx->timing->pts_set = 1;
+				LLONG pes_time = time_to_pes_time(time);
+				set_current_pts(dec_ctx->timing, pes_time);
+				// Set min_pts on first valid timestamp to enable fts_now calculation
+				if (dec_ctx->timing->min_pts == 0x01FFFFFFFF || pes_time < dec_ctx->timing->min_pts)
+				{
+					dec_ctx->timing->min_pts = pes_time;
+				}
+				// pts_set = 2 (MinPtsSet) is required for proper fts_now calculation
+				dec_ctx->timing->pts_set = 2;
 				frames_since_ref_time = 0;
 				set_fts(dec_ctx->timing);
 			}

src/rust/lib_ccxr/src/util/encoding.rs

@@ -584,7 +584,7 @@ fn latin1_to_line21(c: Latin1Char) -> Line21Char {
         0xbf => 0x83, // Inverted (open) question mark
         0xa2 => 0x85, // Cents symbol
         0xa3 => 0x86, // Pounds sterling
-        0xb6 => 0x87, // Music note (pilcrow in Latin-1)
+        b'#' => 0x87, // Music note (# in Latin-1)
         0xe0 => 0x88, // lowercase a, grave accent
         0x20 => 0x89, // transparent space
         0xe8 => 0x8a, // lowercase e, grave accent
@@ -682,7 +682,7 @@ pub fn line21_to_latin1(c: Line21Char) -> Latin1Char {
             0x84 => UNAVAILABLE_CHAR, // Trademark symbol (TM) - Does not exist in Latin 1
             0x85 => 0xa2,             // Cents symbol
             0x86 => 0xa3,             // Pounds sterling
-            0x87 => 0xb6,             // Music note - Not in latin 1, so we use 'pilcrow'
+            0x87 => b'#',             // Music note - Not in latin 1, so we use '#'
             0x88 => 0xe0,             // lowercase a, grave accent
             0x89 => 0x20,             // transparent space, we make it regular
             0x8a => 0xe8,             // lowercase e, grave accent