feat: add COC canon and archive legacy MJS data files

- Add Community of Christ (RLDS) canon with different Book of Mormon versification
- COC has 15 books with fewer, larger chapters than LDS edition
- Move legacy data/*.mjs files to _archive (replaced by YAML)

Note: Source code still imports archived MJS files - refactoring needed
to switch to YAML-based data loading.

New data structure:
  data/canons/bible/   - Bible (66 books)
  data/canons/lds/     - LDS (extends Bible + 21 books)
  data/canons/coc/     - COC (extends Bible + 15 books, different versification)
  data/shared/         - Shared language patterns

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

Author: kckern

data/canons/coc/_structure.yml

@@ -0,0 +1,83 @@
+canon: coc
+name: Community of Christ Scripture
+description: RLDS/Community of Christ edition - Book of Mormon with different versification
+extends: bible
+id_format: integer
+id_start: 31105
+id_end: 39746
+books:
+  - key: 1_nephi
+    order: 67
+    chapters: 7
+    verses: [174, 100, 255, 62, 262, 56, 68]
+    first_verse_id: 31105
+  - key: 2_nephi
+    order: 68
+    chapters: 15
+    verses: [126, 48, 64, 51, 114, 106, 43, 100, 137, 54, 160, 98, 31, 12, 18]
+    first_verse_id: 32082
+  - key: jacob
+    order: 69
+    chapters: 5
+    verses: [19, 69, 151, 18, 45]
+    first_verse_id: 33244
+  - key: enos
+    order: 70
+    chapters: 1
+    verses: [45]
+    first_verse_id: 33546
+  - key: jarom
+    order: 71
+    chapters: 1
+    verses: [32]
+    first_verse_id: 33591
+  - key: omni
+    order: 72
+    chapters: 1
+    verses: [52]
+    first_verse_id: 33623
+  - key: words_of_mormon
+    order: 73
+    chapters: 1
+    verses: [27]
+    first_verse_id: 33675
+  - key: mosiah
+    order: 74
+    chapters: 13
+    verses: [129, 49, 21, 9, 86, 58, 124, 91, 181, 19, 207, 26, 68]
+    first_verse_id: 33702
+  - key: alma
+    order: 75
+    chapters: 30
+    verses: [129, 28, 108, 9, 44, 42, 50, 108, 73, 111, 32, 219, 82, 127, 68, 260, 83, 17, 115, 99, 186, 44, 44, 79, 63, 168, 58, 26, 62, 21]
+    first_verse_id: 34770
+  - key: helaman
+    order: 76
+    chapters: 5
+    verses: [52, 168, 132, 73, 140]
+    first_verse_id: 37325
+  - key: 3_nephi
+    order: 77
+    chapters: 14
+    verses: [57, 109, 70, 75, 115, 37, 45, 74, 106, 41, 33, 34, 62, 2]
+    first_verse_id: 37890
+  - key: 4_nephi
+    order: 78
+    chapters: 1
+    verses: [59]
+    first_verse_id: 38750
+  - key: mormon
+    order: 79
+    chapters: 4
+    verses: [89, 54, 32, 103]
+    first_verse_id: 38809
+  - key: ether
+    order: 80
+    chapters: 6
+    verses: [116, 5, 102, 115, 41, 109]
+    first_verse_id: 39087
+  - key: moroni
+    order: 81
+    chapters: 10
+    verses: [4, 3, 3, 4, 3, 9, 53, 35, 28, 30]
+    first_verse_id: 39575

data/canons/coc/en.yml

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+canon: coc
+language: en
+
+# COC/RLDS Book of Mormon uses same book names as LDS but different versification
+books:
+  1_nephi:
+    name: 1 Nephi
+    pattern: "ne\\.*(?:phi)*"
+    alt: [1 ne, 1ne, 1 nep, first nephi, I nephi]
+
+  2_nephi:
+    name: 2 Nephi
+    pattern: "ne\\.*(?:phi)*"
+    alt: [2 ne, 2ne, 2 nep, second nephi, II nephi]
+
+  jacob:
+    name: Jacob
+    pattern: "jac\\.*(?:ob)*"
+    alt: [jacob, jac]
+
+  enos:
+    name: Enos
+    pattern: "en\\.*(?:os)*"
+    alt: [enos]
+
+  jarom:
+    name: Jarom
+    pattern: "jar\\.*(?:om)*"
+    alt: [jarom, jar]
+
+  omni:
+    name: Omni
+    pattern: "om\\.*(?:ni)*"
+    alt: [omni, om]
+
+  words_of_mormon:
+    name: Words of Mormon
+    pattern: "(?:the *)*w(?:ords)*[ _-]*o[ _-f]*m(?:ormon)*"
+    alt: [w of m, wom]
+
+  mosiah:
+    name: Mosiah
+    pattern: "mos\\.*(?:iah)*"
+    alt: [mosiah, mos]
+
+  alma:
+    name: Alma
+    pattern: "alma"
+    alt: [alma, al]
+
+  helaman:
+    name: Helaman
+    pattern: "hela*\\.*(?:a*man)*"
+    alt: [hel, helaman]
+
+  3_nephi:
+    name: 3 Nephi
+    pattern: "ne\\.*(?:phi)*"
+    alt: [3 ne, 3ne, 3 nep, third nephi, III nephi]
+
+  4_nephi:
+    name: 4 Nephi
+    pattern: "ne\\.*(?:phi)*"
+    alt: [4 ne, 4ne, 4 nep, fourth nephi, IV nephi]
+
+  mormon:
+    name: Mormon
+    pattern: "morm\\.*(?:on)*"
+    alt: [morm, mormon]
+
+  ether:
+    name: Ether
+    pattern: "eth\\.*(?:er)*"
+    alt: [ether, eth]
+
+  moroni:
+    name: Moroni
+    pattern: "moro\\.*(?:ni)*"
+    alt: [moro, moroni]
+
+pre_rules:
+  - ["\\bgospel\\s+(?:of|according\\s+to)\\s+", ""]
+  - ["\\brlds\\s+", ""]
+  - ["\\bcommunity\\s+of\\s+christ\\s+", ""]