server: support skills at max level on a character's first login

support_skills_max.quest sets 121/122/124/126-129/131 to their skill_proto
max, the horse to level 30 (skill 130) and the horse skills 137-139 (140 for
assassins), once per character. install.sh adds it to locale_list and
pc.set_skill_level to quest_functions (qc rejects it otherwise), then make.py.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

tools/server/support-skills/README.md

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+# 辅助技能满级（203 服务端）
+
+任务 `support_skills_max`：每个角色第一次登录时（新建角色第一次进游戏，已有角色下次登录），把辅助技能直接设到
+最高等级，只执行一次（之后任务状态是 `done`）。`pc.set_skill_level` 不消耗技能点，也不检查学习条件。
+
+| 技能 | 等级 |
+|---|---|
+| 121 统御、124 采矿、129 幻化 | 40 |
+| 122 连击 | 2 |
+| 126 / 127 / 128 盛唐语 / 秦皇语 / 汉武语 | 20 |
+| 131 召唤马匹 | 10 |
+| 130 骑马 | 马的等级：`horse.set_level(30)`（`HORSE_MAX_LEVEL`） |
+| 137 乱舞、138 突击、139 脱出；140 乱舞（弓）只给刺客 | 1 |
+
+钓鱼不是技能；123（制作物品）、125、141、142 在 203 的 skill_proto 里没有，不设。
+
+    sh install.sh    # 在服务器上，从本目录运行；然后重启 game
+
+备份在 `/root/backup-support-skills/<时间>`（`locale_list`、`quest_functions`）。qc 只认 `quest_functions` 里列出的函数，
+`pc.set_skill_level` 在 game 里有（`questlua_pc.cpp`）但清单里没有，install.sh 会补上。

tools/server/support-skills/install.sh

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+#!/bin/sh
+# Installs quest support_skills_max (README.md): run on the server from this directory, then restart game.
+# Adds the quest (GBK) to the locale's quest directory and locale_list, pc.set_skill_level to quest_functions,
+# and recompiles all quests.
+set -eu
+
+SERVER=${SERVER:-/usr/metin2/server}
+LOCALE=${LOCALE:-newcibn}
+QUEST="$SERVER/share/locale/$LOCALE/quest"
+HERE=$(cd "$(dirname "$0")" && pwd)
+BACKUP=/root/backup-support-skills/$(date +%Y%m%d-%H%M%S)
+export LC_ALL=C
+
+mkdir -p "$BACKUP"
+cp -p "$QUEST/locale_list" "$QUEST/quest_functions" "$BACKUP/"
+echo "backup: $BACKUP"
+
+iconv -f UTF-8 -t GBK "$HERE/support_skills_max.quest" > "$BACKUP/support_skills_max.gbk"
+# A GBK trail byte 0x5C would be a backslash to qc.
+if grep -q '\\' "$BACKUP/support_skills_max.gbk"; then echo "backslash byte in GBK" >&2; exit 1; fi
+cat "$BACKUP/support_skills_max.gbk" > "$QUEST/support_skills_max.quest"
+
+# qc only accepts functions listed in quest_functions; game registers pc.set_skill_level (questlua_pc.cpp)
+# but the list does not have it.
+grep -qx pc.set_skill_level "$QUEST/quest_functions" || echo pc.set_skill_level >> "$QUEST/quest_functions"
+
+# make.py strips only the LF of a locale_list line (203's has no newline after the last line).
+sed -i '' '/^support_skills_max\.quest/d' "$QUEST/locale_list"
+[ -z "$(tail -c 1 "$QUEST/locale_list")" ] || echo >> "$QUEST/locale_list"
+echo support_skills_max.quest >> "$QUEST/locale_list"
+
+# make.py's shebang (/usr/local/bin/python) does not exist on 203.
+cd "$QUEST" && /usr/local/bin/python2.7 make.py > "$BACKUP/make.log" 2>&1 || { tail "$BACKUP/make.log" >&2; exit 1; }
+ls object/notarget/login 2>/dev/null | grep support_skills_max || ls -R object | grep support_skills_max
+echo "done; restart game"

tools/server/support-skills/support_skills_max.quest

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+-- Every character gets the support skills at their highest level on its first login (install.sh).
+-- UTF-8 here; install.sh converts it to GBK for qc. Levels are the max_level of skill_proto on 203.
+quest support_skills_max begin
+	state start begin
+		when login begin
+			local skills = {
+				{ 121, 40 },	-- 统御
+				{ 122, 2 },	-- 连击
+				{ 124, 40 },	-- 采矿
+				{ 126, 20 },	-- 盛唐语
+				{ 127, 20 },	-- 秦皇语
+				{ 128, 20 },	-- 汉武语
+				{ 129, 40 },	-- 幻化
+				{ 131, 10 },	-- 召唤马匹
+				{ 137, 1 },	-- 乱舞
+				{ 138, 1 },	-- 突击
+				{ 139, 1 },	-- 脱出
+			}
+			for i = 1, table.getn(skills) do
+				pc.set_skill_level(skills[i][1], skills[i][2])
+			end
+			-- 乱舞（弓） is the assassin's (char_skill.cpp: SKILL_HORSE_WILDATTACK_RANGE).
+			if pc.get_job() == 1 then
+				pc.set_skill_level(140, 1)
+			end
+			-- 骑马 (130) is the horse level (CHARACTER::SetHorseLevel), at most HORSE_MAX_LEVEL 30.
+			if horse.get_level() < 30 then
+				horse.set_level(30)
+			end
+			syschat("辅助技能已全部提升到最高等级，马匹已升到30级。")
+			set_state("done")
+		end
+	end
+	state done begin
+	end
+end