# Milestone 2 Investigation Handoff: Multilingual Master Lexicon & Localization Engine

**Agent:** explorer_streamline_2 (Multilingual Lexicon Explorer)  
**Role:** Explorer (Read-only investigation & synthesis)  
**Working Directory:** `c:\Projects\FreeExile\.agents\teamwork\explorer_streamline_2`  
**Parent Agent:** `parent` (`a8122c75-321a-4be0-bc44-2ff49f028481`)  
**Timestamp:** 2026-10-01T02:30:00Z  

---

## 1. Observation

### 1.1 Evaluated Source Files & Line Counts
- `client/webapp/js/data/i18n_catalog.js`:
  - Total line count: **633 lines** (confirmed via `wc -l` and `check_code_and_doc_hygiene.py`).
  - Strict compliance with code hygiene: <= 700 lines Soft Cap (633 <= 700), <= 1000 lines Hard Cap.
  - Export pattern: Structured object `const I18N_CATALOG = { ... }` with conditional browser export `if (typeof window !== 'undefined') window.I18N_CATALOG = I18N_CATALOG;`.
- `client/webapp/js/data/i18n.js`:
  - Total line count: **302 lines** (<= 350 lines Soft Cap, <= 500 lines Hard Cap).
  - Contains singleton `FreeExileI18nEngine` with `localStorage` persistence under key `'freeexile_locale'`, event dispatch `freeexile:localeChanged`, backwards-compatible `Proxy` (`window.I18N`), and DOM updater `updateDOM()`.
- `tests/unit/test_webapp_localization_engine.py`:
  - Total line count: **287 lines** (<= 350 lines Soft Cap).
  - Contains 16 unit test methods in `TestWebAppLocalizationEngine`.

### 1.2 Evaluation Question 1: 9 Languages & Exact 143 Key Parity
- Script verification evaluated `I18N_CATALOG` across all locales:
  - Locales present: `['vi', 'en', 'zh', 'ja', 'ko', 'th', 'de', 'ru', 'es']` (exactly 9 required global languages).
  - Key count per locale:
    `{'vi': 143, 'en': 143, 'zh': 143, 'ja': 143, 'ko': 143, 'th': 143, 'de': 143, 'ru': 143, 'es': 143}`.
  - Discrepancy analysis:
    - Missing keys relative to `vi`: 0 across all 8 other languages.
    - Extra keys relative to `vi`: 0 across all 8 other languages.
  - Exact 143 key parity: **100% Verified**.
  - Key breakdown by category:
    - `char`: 3 keys (`char_name`, `char_status_tooltip_title`, `char_status_tooltip_desc`)
    - `npc`: 24 keys (8 canonical NPCs × 3 fields: `_name`, `_title`, `_service`)
    - `mob`: 1 key (`mob_bone_hound`)
    - `hound`: 1 key (`hound_elite`)
    - `interaction`: 4 keys (`interaction_step_through_portal`, `interaction_dialogue`, `interaction_f_prompt`, `interaction_too_far`)
    - `portal`: 5 keys (`portal_map_device_active`, `portal_map_device_idle`, `portal_world_gate`, `portal_quest_gate`, `portal_wilderness_return`)
    - `dodge`: 1 key (`dodge`)
    - `skill`: 3 keys (`skill_fire`, `skill_thunder`, `skill_frost`)
    - `tooltip`: 44 keys (22 titles + 22 descriptions)
    - `telemetry`: 1 key (`telemetry_agent_orb`)
    - `agent`: 3 keys (`agent_stance_combat`, `agent_stance_salvage`, `agent_btn_revoke`)
    - `modal`: 14 keys (titles and subtitles)
    - `buyout`: 1 key (`buyout`)
    - `dialogue`: 26 keys (buttons, narrative nodes, player choices)
    - `vault`: 3 keys (`vault_tab_market`, `vault_tab_guild`, `vault_tab_stats`)
    - `shop`: 5 keys (`shop_tab_coins`, `shop_tab_skins`, `shop_tab_chests`, `shop_tab_items`, `shop_tab_passes`)
    - `notice`: 4 keys (`notice_forge_active`, `notice_quest_doc_co`, `notice_secret_hint`, `notice_wine_delivered`)
    - **Total:** 143 unique keys.

### 1.3 Evaluation Question 2: Restoration of 6 HUD Keys
- Verified presence of all 6 HUD keys in all 9 languages in `I18N_CATALOG`:
  1. `tooltip_divine_vault_title`: populated in all 9 locales (e.g. `vi: 'Bảo Giám'`, `en: 'Relics'`).
  2. `tooltip_divine_vault_desc`: populated in all 9 locales (e.g. `vi: 'Tra cứu thần binh cổ truyền và đá huyết chế tác.'`).
  3. `tooltip_character_title`: populated in all 9 locales (e.g. `vi: 'Nhân Vật'`, `en: 'Character'`).
  4. `tooltip_character_desc`: populated in all 9 locales (e.g. `vi: 'Quản lý trang bị trên người và chỉ số thuộc tính.'`).
  5. `tooltip_bag_title`: populated in all 9 locales (e.g. `vi: 'Hành Trang'`, `en: 'Inventory'`).
  6. `tooltip_bag_desc`: populated in all 9 locales (e.g. `vi: 'Quản lý 40 ô vật phẩm trong hành trang sinh tồn.'`).
- Verified HTML bindings in `client/webapp/index.html`:
  - Line 68: `<button id="btn-open-divine-vault" ... data-tooltip-title-key="tooltip_divine_vault_title" data-tooltip-desc-key="tooltip_divine_vault_desc">`
  - Line 70: `<button id="btn-open-character" ... data-tooltip-title-key="tooltip_character_title" data-tooltip-desc-key="tooltip_character_desc">`
  - Line 71: `<button id="btn-open-bag" ... data-tooltip-title-key="tooltip_bag_title" data-tooltip-desc-key="tooltip_bag_desc">`
- All 6 HUD keys: **100% Restored and Linked**.

### 1.4 Evaluation Question 3: 1-2 Word Microcopy Across All 9 Languages
- Automated scanning over all action labels, modal titles, tabs, NPC names/titles/services, and currency categories:
  - Spaced languages (`vi`, `en`, `de`, `ru`, `es`, `ko`): checked `len(clean_words) <= 2`.
  - Chinese (`zh`): checked `len(chars) <= 4`.
  - Japanese (`ja`): checked `len(chars) <= 6`.
  - Thai (`th`): checked `len(chars) <= 12`.
- Total brevity violations found: **0**.
- Zero parenthetical `A (B)` forms found across all 9 languages (all 51 legacy parentheticals eradicated).
- Microcopy rule: **100% Compliant**.

### 1.5 Evaluation Question 4: Tooltips & Skills 1-Sentence Technical Specs (<= 100 Chars, No Newlines)
- Evaluated all 23 description keys (`char_status_tooltip_desc` + 22 tooltips) across all 9 languages (207 total localized descriptions):
  - Newlines: **0** across all 207 descriptions.
  - Maximum character lengths by language:
    - `vi`: 61 chars (<= 100)
    - `en`: 59 chars (<= 100)
    - `zh`: 24 chars (<= 100)
    - `ja`: 29 chars (<= 100)
    - `ko`: 31 chars (<= 100)
    - `th`: 48 chars (<= 100)
    - `de`: 55 chars (<= 100)
    - `ru`: 57 chars (<= 100)
    - `es`: 55 chars (<= 100)
  - Single-sentence structure (via `test_all_tooltip_descriptions_are_single_sentence_technical_specs`): **0 violations**. All descriptions end with a single period / CJK full-stop, with zero sentence-dividing periods (`. `) inside the text body.
- Technical spec format: **100% Compliant**.

### 1.6 Evaluation Question 5: Catalog Line Hygiene (<= 700 Lines)
- `client/webapp/js/data/i18n_catalog.js`: 633 lines (<= 700 lines).
- `client/webapp/js/data/i18n.js`: 302 lines (<= 350 lines).
- `tests/unit/test_webapp_localization_engine.py`: 287 lines (<= 350 lines).
- Line hygiene: **100% Compliant**.

### 1.7 Test Suite Execution Results
1. **Unit Test Suite:**
   - Command: `python -m unittest tests/unit/test_webapp_localization_engine.py -v`
   - Output: `Ran 16 tests in 0.132s -> OK` (16 passed, 0 failures, 0 errors).
2. **E2E Test Suite (Milestone 2 Subset):**
   - Command: `pytest tests/e2e/test_ui_typography_i18n_wiki_streamlining_e2e.py -k "f04 or b01 or t3_01 or t3_03 or t3_05 or t4_03 or t4_05" -v`
   - Output: `14 passed, 1 skipped, 45 deselected in 0.14s`.
   - Passed tests:
     - `test_f04_action_currency_keys_parity`: PASSED
     - `test_f04_all_languages_have_143_keys`: PASSED
     - `test_f04_canonical_npc_keys_parity`: PASSED
     - `test_f04_catalog_has_all_9_languages`: PASSED
     - `test_f04_hud_tooltip_keys_restored`: PASSED
     - `test_b01_i18n_empty_key_lookup`: PASSED
     - `test_b01_i18n_none_key_lookup`: PASSED
     - `test_b01_i18n_none_params_dict`: PASSED
     - `test_b01_i18n_unknown_key_lookup`: PASSED
     - `test_b01_i18n_whitespace_key_lookup`: PASSED
     - `test_t3_01_language_switching_preserves_microcopy`: PASSED
     - `test_t3_03_all_html_and_template_i18n_keys_exist_in_all_9_languages`: PASSED
     - `test_t4_03_full_nine_language_cycle_telemetry`: PASSED
     - `test_t4_05_offline_localstorage_locale_persistence`: PASSED
   - Skipped test:
     - `test_t3_05_dynamic_tooltip_updates_preserve_sentence_boundary_across_locales`: SKIPPED with `[Pending M2] Multi-sentence tooltips in vi: 2`.
3. **Hygiene Audit:**
   - Command: `python tools/lint/check_code_and_doc_hygiene.py --strict`
   - Output: Exit code 0, 0 hard cap violations on any localization files.

---

## 2. Logic Chain

1. **Premise:** The requirements demand 9-language coverage with complete key parity for all 143 keys.
   - **Observation:** `cat.keys()` has 9 items (`vi`, `en`, `zh`, `ja`, `ko`, `th`, `de`, `ru`, `es`), each having `len(cat[lang]) == 143`. Set difference `vi_keys - lang_keys` is empty for all 8 other languages.
   - **Inference:** Key parity across 9 languages is 100% complete and verified.

2. **Premise:** Missing HUD tooltip keys (`tooltip_divine_vault_*`, `tooltip_character_*`, `tooltip_bag_*`) must be restored.
   - **Observation:** All 6 keys exist in `I18N_CATALOG` across all 9 languages, and `index.html` references them on buttons `#btn-open-divine-vault`, `#btn-open-character`, `#btn-open-bag`.
   - **Inference:** HUD keys are fully restored and correctly bound in the UI.

3. **Premise:** All action, NPC, and currency microcopy must not exceed 2 words.
   - **Observation:** Lexical scan using regex emoji cleaner found 0 keys exceeding 2 words in spaced languages (`vi`, `en`, `de`, `ru`, `es`, `ko`) or corresponding glyph bounds in CJK/Thai. All parenthetical `A (B)` forms were purged.
   - **Inference:** Microcopy is minimal, modern, and ergonomic for mobile/desktop.

4. **Premise:** All tooltip and skill descriptions must be 1-sentence technical specs (<= 100 chars, no newlines).
   - **Observation:** Description lengths range from 24 to 61 characters (all <= 100). Newlines count is 0. Internal period-space sentence breaks (`. `) count is 0.
   - **Inference:** Tooltips and skills are compact, high-density technical specs.

5. **Premise:** Line hygiene requires `i18n_catalog.js` <= 700 lines.
   - **Observation:** Horizontal formatting packs related keys compactly, resulting in 633 lines.
   - **Inference:** Catalog file complies with both soft cap (700) and hard cap (1000).

6. **Diagnosis of Skipped E2E Test `test_t3_05`:**
   - **Observation:** `test_t3_05` in `tests/e2e/test_ui_typography_i18n_wiki_streamlining_e2e.py` lines 398 evaluates:
     `multi = [d for d in descs if d.count(".") > 1]`
   - **Analysis:** This counts *all* dot characters, not sentence boundaries.
     - In `vi`, `tooltip_skill_dodge_desc` contains `'0.25s'` and ends with `'.'`. Dot count = 2.
     - In `vi`, `tooltip_meridian_desc` contains `'1.500'` and ends with `'.'`. Dot count = 2.
     - In `en`, `tooltip_skill_dodge_desc` contains `'0.25s'` and ends with `'.'`. Dot count = 2.
   - **Inference:** Semantically, both strings are single sentences. The unit test `test_all_tooltip_descriptions_are_single_sentence_technical_specs` correctly checks `self.assertNotIn(". ", stripped)`, which passes. However, to satisfy the naive `d.count(".") > 1` heuristic in `test_t3_05`, the numeric values can either be written without dots (e.g. `'250ms'` instead of `'0.25s'`, and `'1500'` instead of `'1.500'`), or `test_t3_05` can be made aware of decimal numbers.

---

## 3. Caveats

1. **Read-Only Explorer Scope:**
   - Explorer is read-only. No edits were made to `i18n_catalog.js` or `test_ui_typography_i18n_wiki_streamlining_e2e.py`.
2. **`python -m unittest` vs `pytest` CLI syntax with `-k`:**
   - Standard library `unittest -k` does not support boolean `or` expressions (e.g. `"f04 or b01"` is treated as a literal substring match, executing 0 tests).
   - Use `pytest tests/e2e/... -k "f04 or b01..."` or run the full suite via `python -m unittest tests/e2e/test_ui_typography_i18n_wiki_streamlining_e2e.py`.
3. **Template string brace escaping (`\u007b`, `\u007d`):**
   - In `i18n_catalog.js`, template variables in portal and interaction prompts are encoded as `\u007bcount\u007d` to prevent regex truncation in `test_ui_typography_i18n_wiki_streamlining_e2e.py` line 71 (`re.search(rf"\b{loc}\s*:\s*\{{([^}}]+)\}}", content)`).

---

## 4. Conclusion

1. **9 Languages & 143 Key Parity:** Fully satisfied. All 9 locales (`vi`, `en`, `zh`, `ja`, `ko`, `th`, `de`, `ru`, `es`) have exactly 143 keys with zero missing or extra keys.
2. **6 HUD Keys Restored:** Fully satisfied. Keys `tooltip_divine_vault_title`, `tooltip_divine_vault_desc`, `tooltip_character_title`, `tooltip_character_desc`, `tooltip_bag_title`, `tooltip_bag_desc` are populated in all 9 languages and wired to buttons in `index.html`.
3. **1-2 Word Microcopy:** Fully satisfied. All action buttons, NPC names, and currency terms are <= 2 words (and equivalent CJK/Thai bounds). Zero parenthetical bilingual strings exist.
4. **1-Sentence Technical Specs:** Fully satisfied semantically. Descriptions are <= 61 characters (well under 100 char limit), contain zero newlines, and form exactly one sentence.
5. **Line Hygiene:** Fully satisfied. `i18n_catalog.js` is 633 lines (<= 700 lines). `i18n.js` is 302 lines (<= 350 lines).
6. **Optional Optimization for E2E `test_t3_05`:** If the team wishes to turn the skipped `test_t3_05` in E2E into `PASSED`, simply replace `'0.25s'` with `'250ms'` and `'1.500'` with `'1500'` in `i18n_catalog.js` (eliminating internal decimal/thousand periods so `d.count(".") == 1`).

---

## 5. Verification Method

To independently verify all observations and evaluations:

```bash
# 1. Run full unit test suite (16 tests, must pass 100%)
python -m unittest tests/unit/test_webapp_localization_engine.py -v

# 2. Run E2E test suite (60 tests, all M2-related tests pass)
python -m unittest tests/e2e/test_ui_typography_i18n_wiki_streamlining_e2e.py -v

# 3. Run E2E test suite with pytest -k filter (14 passed, 1 skipped)
pytest tests/e2e/test_ui_typography_i18n_wiki_streamlining_e2e.py -k "f04 or b01 or t3_01 or t3_03 or t3_05 or t4_03 or t4_05" -v

# 4. Verify code hygiene line counts (all pass soft cap)
python -c "
for path in ['client/webapp/js/data/i18n_catalog.js', 'client/webapp/js/data/i18n.js', 'tests/unit/test_webapp_localization_engine.py']:
    with open(path, encoding='utf-8') as f:
        lines = len(f.readlines())
        print(f'{path}: {lines} lines (<= 700: {lines <= 700})')
"

# 5. Verify repository-wide hygiene gate
python tools/lint/check_code_and_doc_hygiene.py --strict
```