Improve wording in terminology cleanup

Replace the placeholder noun left by the previous pass with context-fit
phrasing (arrangement XML, chart, custom songs, etc.).

lib/audio.py

@@ -1,4 +1,4 @@
-"""Audio extraction and conversion for the source game custom song."""
+"""Audio extraction and conversion for custom songs."""
 
 import logging
 import os

lib/gp2rs.py

@@ -1,4 +1,4 @@
-"""Convert Guitar Pro files (.gp5/.gp4/.gp3) to the source game arrangement XML."""
+"""Convert Guitar Pro files (.gp5/.gp4/.gp3) to arrangement XML."""
 
 import logging
 import re
@@ -544,7 +544,7 @@ def convert_track(
     *,
     expand_repeats: bool = True,
 ) -> str:
-    """Convert a GP track to the source game arrangement XML string.
+    """Convert a GP track to arrangement XML string.
 
     Args:
         song: Parsed Guitar Pro song
@@ -558,7 +558,7 @@ def convert_track(
             once in authored order — equivalent to the pre-expansion behavior.
 
     Returns:
-        XML string of the the source game arrangement
+        XML string of the chart arrangement
     """
     track = song.tracks[track_index]
     num_strings = len(track.strings)
@@ -1149,7 +1149,7 @@ def list_tracks(gp_path: str) -> list[dict]:
 
 
 def auto_select_tracks(gp_path: str) -> tuple[list[int], dict[int, str]]:
-    """Auto-select guitar/bass/keys tracks and assign the source game arrangement names.
+    """Auto-select guitar/bass/keys tracks and assign the standard arrangement names.
 
     Includes piano/keyboard tracks as "Keys" arrangements alongside
     guitar and bass tracks.
@@ -1205,7 +1205,7 @@ def auto_select_tracks(gp_path: str) -> tuple[list[int], dict[int, str]]:
                 role = "bass" if t["is_bass"] else "guitar"
                 selected.append((t["index"], role))
 
-    # Assign the source game names: Lead, Rhythm, Combo, Bass, Keys, Drums
+    # Assign the standard arrangement names: Lead, Rhythm, Combo, Bass, Keys, Drums
     track_indices = []
     name_map = {}
     lead_count = 0
@@ -1243,14 +1243,14 @@ def convert_piano_track(
     *,
     expand_repeats: bool = True,
 ) -> str:
-    """Convert a GP piano/keyboard track to the source game XML using MIDI encoding.
+    """Convert a GP piano/keyboard track to arrangement XML using MIDI encoding.
 
-    Encodes MIDI notes into the source game's string+fret format:
+    Encodes MIDI notes into the string+fret format:
         string = midi_note // 24
         fret   = midi_note % 24
 
     This gives a range of 0-143, covering the full piano range within
-    the source game's 6-string x 24-fret structure. The piano highway plugin
+    the 6-string x 24-fret structure. The piano highway plugin
     decodes back via: midi = string * 24 + fret.
 
     Honors GP repeat brackets and D.S./D.C./Coda/Fine jumps when
@@ -1342,7 +1342,7 @@ def convert_piano_track(
                         base_midi = 60  # fallback to middle C
                     midi_note = base_midi + note.value
 
-                    # Encode into the source game string+fret
+                    # Encode into the string+fret
                     rs_string = midi_note // 24
                     rs_fret = midi_note % 24
 
@@ -1449,9 +1449,9 @@ def convert_drum_track(
     *,
     expand_repeats: bool = True,
 ) -> str:
-    """Convert a GP drum/percussion track to the source game XML using MIDI encoding.
+    """Convert a GP drum/percussion track to arrangement XML using MIDI encoding.
 
-    Encodes MIDI drum note numbers into the source game's string+fret format:
+    Encodes MIDI drum note numbers into the string+fret format:
         string = midi_note // 24
         fret   = midi_note % 24
 
@@ -1534,7 +1534,7 @@ def convert_drum_track(
                     if midi_note not in GM_DRUM_MAP:
                         continue  # Skip unknown percussion sounds
 
-                    # Encode into the source game string+fret
+                    # Encode into the string+fret
                     rs_string = midi_note // 24
                     rs_fret = midi_note % 24
 
@@ -1778,7 +1778,7 @@ def convert_file(
     *,
     expand_repeats: bool = True,
 ) -> list[str]:
-    """Convert a GP file to the source game XMLs.
+    """Convert a GP file to arrangement XMLs.
 
     Args:
         gp_path: Path to .gp5/.gp4/.gp3 file

lib/gp2rs_gpx.py

@@ -663,7 +663,7 @@ def list_tracks(gp_path: str) -> list[dict]:
 
 # ---------------------------------------------------------------------------
 # convert_file — mirrors gp2rs.convert_file interface
-# Converts GPX tracks directly to the source game XML, reusing gp2rs._build_xml
+# Converts GPX tracks directly to arrangement XML, reusing gp2rs._build_xml
 # ---------------------------------------------------------------------------
 
 
@@ -816,7 +816,7 @@ def _collect_tone_events(
 
 def _inject_tones(xml_str: str, tone_events: list[tuple[float, str]]) -> str:
     """
-    Inject a <tones> element into a the source game arrangement XML string.
+    Inject a <tones> element into a chart arrangement XML string.
 
     Parses the prettified XML returned by _build_xml, inserts the tones
     block before </song>, and re-serialises. Noop if tone_events is empty.
@@ -1124,7 +1124,7 @@ def convert_file(
     *,
     expand_repeats: bool = True,
 ) -> list[str]:
-    """Convert a .gpx file to the source game XML arrangement files.
+    """Convert a .gpx file to arrangement XML arrangement files.
 
     Mirrors gp2rs.convert_file so the editor plugin can call it transparently.
     expand_repeats is accepted for API compatibility but repeat expansion from
@@ -1809,10 +1809,10 @@ def _is_vocal_track(track: dict) -> bool:
 
 def _gpx_lyric_to_rs(raw: str) -> str:
     """
-    Convert a GPX lyric token to the source game vocal lyric format.
+    Convert a GPX lyric token to the vocal lyric format.
 
     GPX encodes syllable continuation with a trailing hyphen (e.g. "in-", "t-").
-    the source game uses the same convention for mid-word syllables.  For word-final
+    charts use the same convention for mid-word syllables.  For word-final
     syllables with no hyphen, RS requires a "+" suffix to signal "connect to
     next syllable without a space" — but only when the next beat is a
     continuation of the same word.  We handle this at the sequence level in
@@ -1849,7 +1849,7 @@ def convert_vocal_track(
     arr_name: str = 'Vocals',
 ) -> str:
     """
-    Convert a GPX vocal track to a the source game vocals arrangement XML.
+    Convert a GPX vocal track to a chart vocals arrangement XML.
 
     Each beat with a lyric and a note becomes a <vocal> element:
         time   — seconds from song start + audio_offset
@@ -1864,7 +1864,7 @@ def convert_vocal_track(
     Beats with a lyric but no pitch note are included as pitch-0 rests so the
     display timeline stays intact.  Beats with no lyric are skipped entirely.
 
-    The output is a minimal but valid the source game vocals XML.  It does not include
+    The output is a minimal but valid vocals XML.  It does not include
     ebeats or phrases (RS parses vocal XMLs without them).
     """
     string_pitches = track['string_pitches']  # high→low, standard guitar if vocal
@@ -2018,10 +2018,10 @@ def _build_vocals_xml(
     vocals: list[dict],
     tempo: int,
 ) -> str:
-    """Build a the source game vocals arrangement XML string."""
+    """Build a chart vocals arrangement XML string."""
     from xml.dom import minidom
 
-    # the source game vocals arrangement is a flat <vocals> document — NOT a
+    # vocals arrangement is a flat <vocals> document — NOT a
     # <song> wrapper. Every lyric consumer in the codebase keys off the root
     # tag being literally "vocals" (lib/loosefolder.py, server.py highway
     # loader), so a <song> root would be silently skipped and the generated

lib/gp8_audio_sync.py

@@ -128,7 +128,7 @@ def _resolve_audio_asset(zf, root=None) -> tuple[str, str | None]:
 
 # GP8 uses 44100 Hz internally for FrameOffset values regardless of the
 # OGG file's own sample rate. The embedded OGG is typically 48000 Hz
-# (the source game's preferred rate) and should be passed through as-is —
+# (the preferred rate) and should be passed through as-is —
 # do NOT resample it. The 44100 constant is only used here to convert
 # FrameOffset integers to seconds for timing math; it never touches audio.
 # Verified: 44100 gives <10ms sync error; 48000 gives ~530ms error.

lib/loosefolder.py

@@ -176,7 +176,7 @@ def _arr_type_from_filename(stem: str) -> tuple:
 
 
 def _parse_xml_meta(xml_path: Path) -> dict:
-    """Parse a the source game arrangement XML and return song-level metadata."""
+    """Parse a chart arrangement XML and return song-level metadata."""
     try:
         root = ET.parse(str(xml_path)).getroot()
         if root.tag != "song":

lib/progression.py

@@ -349,7 +349,7 @@ def instrument_for_arrangement(arr_entry) -> str:
     # arrangements often carry a generic type (lead/rhythm/combo) but have a
     # name like "Keys" or "Piano".  Name overrides the generic type for all
     # well-known non-guitar instruments so that scored keys runs advance the
-    # keys path and quests even when the the source game XML type was not updated.
+    # keys path and quests even when the chart XML type was not updated.
     if "bass" in name:
         return "bass"
     if "drum" in name or "percussion" in name:

lib/song.py

@@ -1,4 +1,4 @@
-"""the source game arrangement XML parser and song data models."""
+"""arrangement XML parser and song data models."""
 
 from dataclasses import dataclass, field
 from pathlib import Path
@@ -88,7 +88,7 @@ class HandShape:
 @dataclass
 class PhraseLevel:
     """One difficulty tier's worth of note/chord/anchor/hand-shape data for a
-    single phrase iteration. the source game's XML stores these as `<level
+    single phrase iteration. the arrangement XML stores these as `<level
     difficulty="N">` blocks that repeat for every difficulty tier the chart
     author wrote; slopsmith used to collapse them to the phrase's
     maxDifficulty and throw the rest away. Keeping them around lets the
@@ -129,7 +129,7 @@ class Arrangement:
     chord_templates: list[ChordTemplate] = field(default_factory=list)
     # None for single-level sources (GP converter, old sloppaks) — frontends
     # should treat a missing `phrases` as "no per-phrase difficulty data
-    # available, disable the slider". Populated from the source game XML when
+    # available, disable the slider". Populated from arrangement XML when
     # multiple `<level>` tiers exist.
     phrases: list[Phrase] | None = None
     # Tone data lifted from the source archive by the sloppak converter and
@@ -681,7 +681,7 @@ def _int_optional(elem, attr, default=-1):
 
     Use for fields that are merely metadata hints (right-hand fingering,
     pick direction, etc.) where a malformed value from a third-party
-    the source game XML emitter shouldn't abort the whole arrangement parse.
+    arrangement XML emitter shouldn't abort the whole arrangement parse.
 
     Required-field readers (`string`, `fret`, `chordId`, …) keep using
     `_int` so a corrupted required attribute still fails fast at parse
@@ -708,7 +708,7 @@ def _bool(elem, attr):
 
 
 def _hand_shape_arpeggio_flag(elem) -> bool:
-    """the source game / EOF may mark arpeggio on ``<handShape>`` (various casings)."""
+    """charts / EOF may mark arpeggio on ``<handShape>`` (various casings)."""
     for attr in ("arpeggio", "Arpeggio", "arp", "Arp"):
         if _bool(elem, attr):
             return True
@@ -716,7 +716,7 @@ def _hand_shape_arpeggio_flag(elem) -> bool:
 
 
 def _chord_template_arpeggio_flag(elem) -> bool:
-    """the source game commonly tags arpeggio templates in ``displayName`` via ``-arp``."""
+    """charts commonly tag arpeggio templates in ``displayName`` via ``-arp``."""
     for attr in ("arpeggio", "Arpeggio", "arp", "Arp"):
         if _bool(elem, attr):
             return True
@@ -766,7 +766,7 @@ def _parse_note(n) -> Note:
 
 
 def parse_arrangement(xml_path: str) -> Arrangement:
-    """Parse a the source game arrangement XML file."""
+    """Parse a chart arrangement XML file."""
     tree = ET.parse(xml_path)
     root = tree.getroot()
 
@@ -1049,7 +1049,7 @@ def parse_arrangement(xml_path: str) -> Arrangement:
             # wrote at or below this phrase's max — these are what the
             # master-difficulty slider selects between at render time.
             # Tiers above max_diff exist in some XMLs (authoring leftovers)
-            # and are skipped to match the source game's in-game behaviour.
+            # and are skipped to match the reference player's behaviour.
             # Capture the extracted slices so the flat max-mastery merge
             # below can reuse one of them.
             phrase_levels: list[PhraseLevel] = []

lib/wem_decode.py

@@ -58,7 +58,7 @@ def _convert_riff_wem(data: bytes, output_path: str) -> bool:
 
     if codec == 0xFFFF or codec == 0x0069:
         # Wwise Vorbis — audio_data contains raw Ogg pages or encoded Vorbis
-        # For the source game custom song, the data is typically packed Vorbis
+        # For custom songs, the data is typically packed Vorbis
         # Try writing raw data as OGG (some WEM files have valid OGG inside)
         if _try_extract_ogg_pages(audio_data, output_path):
             return True

tests/js/highway_3d_fret_spacing.test.js

@@ -1,5 +1,5 @@
 // Pins the fret-spacing setting in plugins/highway_3d/screen.js (PR #329).
-// The board can render fret columns either Uniform (equal width, the source game
+// The board can render fret columns either Uniform (equal width, the chart
 // Remastered style) or Logarithmic (real instrument geometry), switchable at
 // runtime via window.h3dSetFretSpacing and persisted in localStorage. A
 // refactor that renames the storage key, drops the uniform/log branch in

tests/test_library_filters.py

@@ -294,7 +294,7 @@ def test_year_sort_asc_oldest_first(client, seeded):
 
 def test_tuning_sort_down_tuned_before_up_tuned_at_same_distance(client, server_mod):
     """Within an ABS(tuning_sort_key) tier, the down-tuned variant
-    must come before the up-tuned one so the order matches the source game's
+    must come before the up-tuned one so the order matches the chart's
     grouping (Eb Standard before F Standard at distance 6, etc.).
     Earlier code used signed-key DESC for the tiebreaker, which put
     +6 before -6 — the opposite of intent. Regression for Copilot

tests/test_song.py

@@ -133,7 +133,7 @@ def test_int_optional_falls_back_on_overflow():
 def test_parse_note_falls_back_to_default_on_malformed_numeric_attrs():
     """Malformed numeric XML attributes degrade gracefully.
 
-    Third-party the source game XML occasionally emits empty / non-numeric
+    Third-party arrangement XML occasionally emits empty / non-numeric
     values for fields like `rightHand`. `_int_optional` (used for
     optional metadata fields like `rightHand` and `pickDirection`)
     falls back to the caller's default instead of raising, so a