feat: per-mission params, default config values, and mods bug docs

- Add per-mission params to rotation (MissionRotationItem.params); falls
  back to default_mission_params, then omits entirely if both empty
- Add key-value widget to ConfigEditor for default_mission_params field
- Add MissionParamsEditor component for editing param key/value/type rows
- Bump config schema to 1.1.0 with migration from 1.0.0
- Add normalize_section() to Protocol and ArmaConfigGenerator for
  read-time backfill of old stored rows
- Set Arma3 BasicConfig and ProfileConfig defaults from basic.cfg /
  Administrator.Arma3Profile
- Document 3 known Mods tab bugs in CLAUDE.md for next-session fix

frontend/src/components/servers/ConfigEditor.tsx

@@ -4,6 +4,7 @@ import clsx from "clsx";
 import { useServerConfig, useServerConfigSection, useUpdateConfigSection, useServerConfigSchema } from "@/hooks/useServerDetail";
 import type { FieldSchema } from "@/hooks/useServerDetail";
 import { TagListEditor } from "@/components/ui/TagListEditor";
+import { MissionParamsEditor } from "@/components/servers/MissionParamsEditor";
 import { useAuthStore } from "@/store/auth.store";
 import { useUIStore } from "@/store/ui.store";
 import { logger } from "@/lib/logger";
@@ -183,7 +184,7 @@ function ConfigSectionForm({
         const rawValue = displayValues[key];
 
         return (
-          <div key={key} className={clsx("flex gap-3", widget === "textarea" || widget === "tag-list" ? "flex-col" : "items-center")}>
+          <div key={key} className={clsx("flex gap-3", widget === "textarea" || widget === "tag-list" || widget === "key-value" ? "flex-col" : "items-center")}>
             <label className="text-text-secondary text-sm w-40 shrink-0">{label}</label>
             {isEditing ? (
               <FieldWidget
@@ -203,6 +204,14 @@ function ConfigSectionForm({
               <span className="text-text-primary text-sm flex-1 bg-surface-recessed rounded-lg px-3 py-2">
                 {formatSelectDisplay(rawValue, fieldSchema)}
               </span>
+            ) : widget === "key-value" ? (
+              <div className="bg-surface-recessed rounded-lg px-3 py-2">
+                <MissionParamsEditor
+                  value={rawValue && typeof rawValue === "object" && !Array.isArray(rawValue) ? (rawValue as Record<string, number | string | boolean>) : {}}
+                  onChange={() => {}}
+                  readOnly
+                />
+              </div>
             ) : (
               <span className="text-text-primary font-mono text-sm flex-1 bg-surface-recessed rounded-lg px-3 py-2">
                 {widget === "password" ? "••••••••" : formatDisplayValue(rawValue)}
@@ -301,6 +310,14 @@ function FieldWidget({
         />
       );
 
+    case "key-value":
+      return (
+        <MissionParamsEditor
+          value={value && typeof value === "object" && !Array.isArray(value) ? (value as Record<string, number | string | boolean>) : {}}
+          onChange={onChange}
+        />
+      );
+
     case "number":
       return (
         <input

frontend/src/components/servers/MissionList.tsx

@@ -1,5 +1,6 @@
-import { useState, useRef, useEffect } from "react";
-import { Upload, Trash2, Plus, X, Save } from "lucide-react";
+import { Fragment, useState, useRef, useEffect } from "react";
+import { Upload, Trash2, Plus, X, Save, ChevronDown, ChevronRight } from "lucide-react";
+import { MissionParamsEditor } from "./MissionParamsEditor";
 
 import {
   useServerMissions,
@@ -9,7 +10,7 @@ import {
   useDeleteMission,
   useServerConfigSection,
 } from "@/hooks/useServerDetail";
-import type { MissionRotationEntry } from "@/hooks/useServerDetail";
+import type { MissionRotationEntry, MissionParamValue } from "@/hooks/useServerDetail";
 import { useAuthStore } from "@/store/auth.store";
 import { useUIStore } from "@/store/ui.store";
 import { logger } from "@/lib/logger";
@@ -39,6 +40,7 @@ export function MissionList({ serverId }: MissionListProps) {
   const fileInputRef = useRef<HTMLInputElement>(null);
   const [rotation, setRotation] = useState<MissionRotationEntry[]>([]);
   const [uploadProgress, setUploadProgress] = useState<UploadProgress[]>([]);
+  const [expandedParamsIdx, setExpandedParamsIdx] = useState<number | null>(null);
 
   // Sync rotation from query on load
   useEffect(() => {
@@ -81,7 +83,7 @@ export function MissionList({ serverId }: MissionListProps) {
 
   const addToRotation = (missionName: string) => {
     if (rotation.some((r) => r.name === missionName)) return;
-    setRotation([...rotation, { name: missionName, difficulty: "" }]);
+    setRotation([...rotation, { name: missionName, difficulty: "", params: {} }]);
   };
 
   const removeFromRotation = (idx: number) => {
@@ -92,6 +94,10 @@ export function MissionList({ serverId }: MissionListProps) {
     setRotation(rotation.map((r, i) => (i === idx ? { ...r, difficulty } : r)));
   };
 
+  const updateParams = (idx: number, params: Record<string, MissionParamValue>) => {
+    setRotation(rotation.map((r, i) => (i === idx ? { ...r, params } : r)));
+  };
+
   const handleSaveRotation = async () => {
     try {
       await updateRotation.mutateAsync({ missions: rotation, config_version: configVersion });
@@ -249,7 +255,7 @@ export function MissionList({ serverId }: MissionListProps) {
           )}
         </div>
         <p className="text-text-muted text-xs mb-3">
-          The server cycles through these missions in order. Set per-mission difficulty, then click <strong className="text-text-secondary">Save Rotation</strong> to apply.
+          The server cycles through these missions in order. Set per-mission difficulty and optional params, then click <strong className="text-text-secondary">Save Rotation</strong> to apply.
         </p>
 
         <div className="overflow-x-auto">
@@ -260,6 +266,7 @@ export function MissionList({ serverId }: MissionListProps) {
                 <th className="text-left text-text-muted font-medium px-3 py-2">Mission Name</th>
                 <th className="text-left text-text-muted font-medium px-3 py-2">Terrain</th>
                 <th className="text-left text-text-muted font-medium px-3 py-2">Difficulty</th>
+                <th className="text-left text-text-muted font-medium px-3 py-2">Params</th>
                 {isAdmin && (
                   <th className="text-right text-text-muted font-medium px-3 py-2">Remove</th>
                 )}
@@ -268,58 +275,93 @@ export function MissionList({ serverId }: MissionListProps) {
             <tbody>
               {rotation.length === 0 ? (
                 <tr>
-                  <td colSpan={isAdmin ? 5 : 4} className="text-text-muted text-center py-6">
+                  <td colSpan={isAdmin ? 6 : 5} className="text-text-muted text-center py-6">
                     No missions in rotation. Add from Available above.
                   </td>
                 </tr>
               ) : (
                 rotation.map((entry, idx) => {
                   const missionFile = missions.find((m) => m.name === entry.name);
+                  const paramCount = Object.keys(entry.params ?? {}).length;
+                  const isExpanded = expandedParamsIdx === idx;
                   return (
-                    <tr
-                      key={`${entry.name}-${idx}`}
-                      className="border-b border-surface-overlay/50 hover:bg-surface-overlay/30"
-                    >
-                      <td className="text-text-muted font-mono text-xs px-3 py-2">{idx + 1}</td>
-                      <td className="text-text-primary px-3 py-2">{entry.name}</td>
-                      <td className="px-3 py-2">
-                        {missionFile?.terrain ? (
-                          <span className="bg-accent/20 text-accent text-xs px-2 py-0.5 rounded">
-                            {missionFile.terrain}
-                          </span>
-                        ) : (
-                          <span className="text-text-muted text-xs">—</span>
-                        )}
-                      </td>
-                      <td className="px-3 py-2">
-                        {isAdmin ? (
-                          <select
-                            className="neu-input text-sm py-1"
-                            value={entry.difficulty}
-                            onChange={(e) => updateDifficulty(idx, e.target.value)}
-                          >
-                            {DIFFICULTY_OPTIONS.map((opt) => (
-                              <option key={opt} value={opt}>
-                                {opt || "Default"}
-                              </option>
-                            ))}
-                          </select>
-                        ) : (
-                          <span className="text-text-secondary">{entry.difficulty || "Default"}</span>
-                        )}
-                      </td>
-                      {isAdmin && (
-                        <td className="text-right px-3 py-2">
+                    <Fragment key={`${entry.name}-${idx}`}>
+                      <tr
+                        className="border-b border-surface-overlay/50 hover:bg-surface-overlay/30"
+                      >
+                        <td className="text-text-muted font-mono text-xs px-3 py-2">{idx + 1}</td>
+                        <td className="text-text-primary px-3 py-2">{entry.name}</td>
+                        <td className="px-3 py-2">
+                          {missionFile?.terrain ? (
+                            <span className="bg-accent/20 text-accent text-xs px-2 py-0.5 rounded">
+                              {missionFile.terrain}
+                            </span>
+                          ) : (
+                            <span className="text-text-muted text-xs">—</span>
+                          )}
+                        </td>
+                        <td className="px-3 py-2">
+                          {isAdmin ? (
+                            <select
+                              className="neu-input text-sm py-1"
+                              value={entry.difficulty}
+                              onChange={(e) => updateDifficulty(idx, e.target.value)}
+                            >
+                              {DIFFICULTY_OPTIONS.map((opt) => (
+                                <option key={opt} value={opt}>
+                                  {opt || "Default"}
+                                </option>
+                              ))}
+                            </select>
+                          ) : (
+                            <span className="text-text-secondary">{entry.difficulty || "Default"}</span>
+                          )}
+                        </td>
+                        <td className="px-3 py-2">
                           <button
-                            onClick={() => removeFromRotation(idx)}
-                            className="btn-ghost text-status-crashed"
-                            aria-label={`Remove ${entry.name} from rotation`}
+                            onClick={() => setExpandedParamsIdx(isExpanded ? null : idx)}
+                            className="btn-ghost text-xs flex items-center gap-1"
+                            title={isExpanded ? "Hide parameters" : "Edit parameters"}
                           >
-                            <X size={14} />
+                            {isExpanded ? <ChevronDown size={12} /> : <ChevronRight size={12} />}
+                            {paramCount > 0 ? (
+                              <span className="bg-accent/20 text-accent px-1.5 py-0.5 rounded text-xs">
+                                {paramCount} param{paramCount !== 1 ? "s" : ""}
+                              </span>
+                            ) : (
+                              <span className="text-text-muted">Default</span>
+                            )}
                           </button>
                         </td>
+                        {isAdmin && (
+                          <td className="text-right px-3 py-2">
+                            <button
+                              onClick={() => removeFromRotation(idx)}
+                              className="btn-ghost text-status-crashed"
+                              aria-label={`Remove ${entry.name} from rotation`}
+                            >
+                              <X size={14} />
+                            </button>
+                          </td>
+                        )}
+                      </tr>
+                      {isExpanded && (
+                        <tr className="bg-surface-overlay/10 border-b border-surface-overlay/50">
+                          <td colSpan={isAdmin ? 6 : 5} className="px-6 py-3">
+                            <div className="space-y-2">
+                              <p className="text-text-muted text-xs">
+                                Per-mission parameters override the server default. Leave empty to use defaults from the Config tab.
+                              </p>
+                              <MissionParamsEditor
+                                value={entry.params ?? {}}
+                                onChange={(next) => updateParams(idx, next)}
+                                readOnly={!isAdmin}
+                              />
+                            </div>
+                          </td>
+                        </tr>
                       )}
-                    </tr>
+                    </Fragment>
                   );
                 })
               )}

frontend/src/components/servers/MissionParamsEditor.tsx

@@ -0,0 +1,144 @@
+import { Plus, X } from "lucide-react";
+import type { MissionParamValue } from "@/hooks/useServerDetail";
+
+type ParamsRecord = Record<string, MissionParamValue>;
+type ParamType = "number" | "boolean" | "string";
+
+interface MissionParamsEditorProps {
+  value: ParamsRecord;
+  onChange: (next: ParamsRecord) => void;
+  readOnly?: boolean;
+}
+
+export function MissionParamsEditor({ value, onChange, readOnly = false }: MissionParamsEditorProps) {
+  const entries = Object.entries(value);
+
+  const getType = (val: MissionParamValue): ParamType => {
+    if (typeof val === "boolean") return "boolean";
+    if (typeof val === "number") return "number";
+    return "string";
+  };
+
+  const updateKey = (oldKey: string, newKey: string) => {
+    if (oldKey === newKey || !newKey.trim()) return;
+    const next: ParamsRecord = {};
+    for (const [k, v] of Object.entries(value)) {
+      next[k === oldKey ? newKey.trim() : k] = v;
+    }
+    onChange(next);
+  };
+
+  const updateValue = (key: string, val: MissionParamValue) => {
+    onChange({ ...value, [key]: val });
+  };
+
+  const changeType = (key: string, type: ParamType) => {
+    const defaultByType: Record<ParamType, MissionParamValue> = {
+      number: 0,
+      boolean: false,
+      string: "",
+    };
+    updateValue(key, defaultByType[type]);
+  };
+
+  const removeEntry = (key: string) => {
+    const next = { ...value };
+    delete next[key];
+    onChange(next);
+  };
+
+  const addEntry = () => {
+    let base = "param";
+    let i = 1;
+    while (value[base] !== undefined) base = `param${i++}`;
+    onChange({ ...value, [base]: 0 });
+  };
+
+  if (entries.length === 0 && readOnly) {
+    return <span className="text-text-muted text-sm italic">No parameters set</span>;
+  }
+
+  return (
+    <div className="space-y-1.5">
+      {entries.map(([key, val]) => {
+        const t = getType(val);
+        return (
+          <div key={key} className="flex gap-2 items-center">
+            {readOnly ? (
+              <span className="font-mono text-sm text-text-primary w-40 shrink-0">{key}</span>
+            ) : (
+              <input
+                className="neu-input text-sm font-mono"
+                style={{ width: "10rem" }}
+                value={key}
+                onChange={(e) => updateKey(key, e.target.value)}
+                onBlur={(e) => updateKey(key, e.target.value)}
+                placeholder="param name"
+              />
+            )}
+
+            {!readOnly && (
+              <select
+                className="neu-input text-sm"
+                style={{ width: "6.5rem" }}
+                value={t}
+                onChange={(e) => changeType(key, e.target.value as ParamType)}
+              >
+                <option value="number">Number</option>
+                <option value="string">String</option>
+                <option value="boolean">Bool</option>
+              </select>
+            )}
+
+            {readOnly ? (
+              <span className="font-mono text-sm text-text-secondary flex-1">{String(val)}</span>
+            ) : t === "boolean" ? (
+              <input
+                type="checkbox"
+                className="w-5 h-5 accent-accent"
+                checked={Boolean(val)}
+                onChange={(e) => updateValue(key, e.target.checked)}
+              />
+            ) : t === "number" ? (
+              <input
+                type="number"
+                className="neu-input text-sm flex-1"
+                value={String(val)}
+                onChange={(e) => updateValue(key, Number(e.target.value))}
+              />
+            ) : (
+              <input
+                type="text"
+                className="neu-input text-sm flex-1"
+                value={String(val)}
+                onChange={(e) => updateValue(key, e.target.value)}
+              />
+            )}
+
+            {!readOnly && (
+              <button
+                type="button"
+                onClick={() => removeEntry(key)}
+                className="btn-ghost text-status-crashed p-1"
+                aria-label={`Remove ${key} parameter`}
+              >
+                <X size={12} />
+              </button>
+            )}
+          </div>
+        );
+      })}
+
+      {!readOnly && (
+        <button
+          type="button"
+          onClick={addEntry}
+          className="btn-ghost text-sm flex items-center gap-1 mt-1"
+        >
+          <Plus size={12} />
+          Add Parameter
+        </button>
+      )}
+    </div>
+  );
+}

frontend/src/hooks/useServerDetail.ts

@@ -105,9 +105,12 @@ export interface Mission {
   terrain: string;
 }
 
+export type MissionParamValue = number | string | boolean;
+
 export interface MissionRotationEntry {
   name: string;
   difficulty: string;
+  params: Record<string, MissionParamValue>;
 }
 
 export interface MissionsResponse {
@@ -126,7 +129,7 @@ export interface Mod {
 }
 
 export interface FieldSchema {
-  widget: "text" | "number" | "password" | "textarea" | "select" | "toggle" | "tag-list" | "hidden";
+  widget: "text" | "number" | "password" | "textarea" | "select" | "toggle" | "tag-list" | "hidden" | "key-value";
   label?: string;
   placeholder?: string;
   min?: number;