Add video management endpoints and fix LLM extraction pipeline

- Add missing endpoints: fetch-transcript, extract, bulk-extract/pending,
  bulk-transcript/pending, manual restaurant add, restaurant update
- Add OCI HTTP client dependency (jersey3) for GenAI SDK compatibility
- Fix Oracle null parameter ORA-17004 with jdbcType=CLOB in MyBatis
- Fix evaluation IS JSON constraint by storing as valid JSON
- Add @JsonProperty("transcript") for frontend compatibility
- Add Korean-only rule to LLM extraction prompt

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

backend-java/src/main/resources/mybatis/mapper/RestaurantMapper.xml

@@ -166,7 +166,7 @@
 
     <insert id="linkVideoRestaurant">
         INSERT INTO video_restaurants (id, video_id, restaurant_id, foods_mentioned, evaluation, guests)
-        VALUES (#{id}, #{videoId}, #{restaurantId}, #{foods}, #{evaluation}, #{guests})
+        VALUES (#{id}, #{videoId}, #{restaurantId}, #{foods,jdbcType=CLOB}, #{evaluation,jdbcType=CLOB}, #{guests,jdbcType=CLOB})
     </insert>
 
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