Add EngagementEngine, persona system, dropdowns, penalties, /resetmatty, debug logging

Makefile

@@ -0,0 +1,70 @@
+# Mattermore — Mattermost AI Chat Agent
+# Build targets:
+#   make dist       — Build all platform binaries and package plugin
+#   make build      — Build linux-amd64 binary only
+#   make check      — Lint + test
+#   make clean      — Remove build artifacts
+
+PLUGIN_ID := com.forkless.mattermore
+PLUGIN_VERSION := 0.1.0
+DIST_DIR := dist
+SERVER_DIR := server
+BUNDLE_NAME := $(PLUGIN_ID)-$(PLUGIN_VERSION).tar.gz
+BUNDLE_PATH := $(DIST_DIR)/$(BUNDLE_NAME)
+
+# Platforms to build for
+LINUX_AMD64 := linux-amd64
+LINUX_ARM64 := linux-arm64
+DARWIN_AMD64 := darwin-amd64
+DARWIN_ARM64 := darwin-arm64
+
+.PHONY: all build dist check clean
+
+all: dist
+
+# Build linux-amd64 only (fastest for local testing)
+build:
+	@mkdir -p $(SERVER_DIR)/dist
+	GOOS=linux GOARCH=amd64 CGO_ENABLED=0 \
+		go build -o $(SERVER_DIR)/dist/plugin-$(LINUX_AMD64) ./$(SERVER_DIR)
+
+# Build all platform binaries
+dist: build-all-platforms bundle
+
+build-all-platforms:
+	@mkdir -p $(SERVER_DIR)/dist
+	@echo "Building for $(LINUX_AMD64)..."
+	@GOOS=linux GOARCH=amd64 CGO_ENABLED=0 \
+		go build -o $(SERVER_DIR)/dist/plugin-$(LINUX_AMD64) ./$(SERVER_DIR)
+	@echo "Building for $(LINUX_ARM64)..."
+	@GOOS=linux GOARCH=arm64 CGO_ENABLED=0 \
+		go build -o $(SERVER_DIR)/dist/plugin-$(LINUX_ARM64) ./$(SERVER_DIR)
+	@echo "Building for $(DARWIN_AMD64)..."
+	@GOOS=darwin GOARCH=amd64 CGO_ENABLED=0 \
+		go build -o $(SERVER_DIR)/dist/plugin-$(DARWIN_AMD64) ./$(SERVER_DIR)
+	@echo "Building for $(DARWIN_ARM64)..."
+	@GOOS=darwin GOARCH=arm64 CGO_ENABLED=0 \
+		go build -o $(SERVER_DIR)/dist/plugin-$(DARWIN_ARM64) ./$(SERVER_DIR)
+
+bundle:
+	@mkdir -p $(DIST_DIR)
+	@echo "Creating bundle..."
+	@mkdir -p /tmp/mm-bundle/$(PLUGIN_ID)-$(PLUGIN_VERSION)
+	@cp plugin.json /tmp/mm-bundle/$(PLUGIN_ID)-$(PLUGIN_VERSION)/
+	@mkdir -p /tmp/mm-bundle/$(PLUGIN_ID)-$(PLUGIN_VERSION)/server/dist
+	@cp $(SERVER_DIR)/dist/* /tmp/mm-bundle/$(PLUGIN_ID)-$(PLUGIN_VERSION)/server/dist/
+	@cd /tmp/mm-bundle && tar czf $(CURDIR)/$(BUNDLE_PATH) $(PLUGIN_ID)-$(PLUGIN_VERSION)
+	@rm -rf /tmp/mm-bundle
+	@echo "Bundle created: $(BUNDLE_PATH)"
+
+check:
+	@echo "Running go vet..."
+	@go vet ./$(SERVER_DIR)
+	@echo "Running go fmt..."
+	@go fmt ./$(SERVER_DIR)
+	@echo "Done"
+
+clean:
+	@rm -rf $(DIST_DIR)
+	@rm -rf $(SERVER_DIR)/dist
+	@echo "Cleaned"

dev/docker-compose.yml

@@ -25,11 +25,11 @@ services:
       postgres:
         condition: service_healthy
     environment:
-      # Database
+      # Database — full connection string (env format: MM_{SECTION}_{KEY})
-      MM_USERNAME: mmuser
+      MM_SQLSETTINGS_DATASOURCE: "postgres://mmuser:mmuser_pass@postgres:5432/mattermost_test?sslmode=disable&connect_timeout=10"
-      MM_PASSWORD: mmuser_pass
+      # Plugin + file storage — use /tmp to avoid permission issues
-      MM_DBNAME: mattermost_test
+      MM_PLUGINSETTINGS_DIRECTORY: /tmp/plugins
-      MM_DBHOST: postgres:5432
+      MM_FILESETTINGS_DIRECTORY: /tmp/file_data
       # Server
       MM_SERVICESETTINGS_SITEURL: http://localhost:8065
       MM_SERVICESETTINGS_LISTENADDRESS: :8065
@@ -46,21 +46,44 @@ services:
       MM_ANNOUNCEMENTSETTINGS_ADMINNOTICESENABLED: "false"
     ports:
       - "8065:8065"
-    # Auto-create admin user (admin/admin) on first boot.
-    entrypoint: ["/bin/bash", "/init.sh"]
     volumes:
-      # Init script creates admin user on first startup.
-      - ./init.sh:/init.sh:ro
       # Plugin directory — mount so you can upload via UI:
       - ./mattermost/plugins:/mattermost/data/plugins:rw
       # Data volume for uploads, avatars, etc.
       - mattermost-data:/mattermost/data:rw
     healthcheck:
-      test: ["CMD-SHELL", "curl -sf http://localhost:8065/api/v4/system/ping | grep -q OK"]
+      test: ["CMD", "pgrep", "mattermost"]
       interval: 10s
       timeout: 5s
-      retries: 10
+      retries: 30
-      start_period: 30s
+      start_period: 20s
+
+  setup:
+    image: curlimages/curl:latest
+    container_name: mattermore-setup
+    depends_on:
+      mattermost:
+        condition: service_healthy
+    command:
+      - /bin/sh
+      - -c
+      - |
+        echo "setup: waiting for Mattermost API..."
+        for i in $(seq 1 30); do
+          if curl -sf http://mattermost:8065/api/v4/system/ping > /dev/null 2>&1; then
+            echo "setup: Mattermost is ready"
+            break
+          fi
+          echo "setup: waiting... ($i)"
+          sleep 3
+        done
+        echo "setup: creating admin user..."
+        curl -s -X POST http://mattermost:8065/api/v4/users \
+          -H "Content-Type: application/json" \
+          -d '{"email":"admin@example.com","username":"admin","password":"password"}' \
+          -w "\nsetup: HTTP %{http_code}"
+        echo ""
+        echo "setup: done"
 
 volumes:
   mattermost-data:

plugin.json

@@ -1,6 +1,6 @@
 {
     "id": "com.forkless.mattermore",
-    "name": "Mattermore",
+    "name": "Matty",
     "description": "AI chat agent powered by Ollama.",
     "version": "0.1.0",
     "min_server_version": "11.6.1",
@@ -12,7 +12,6 @@
             "darwin-arm64": "server/dist/plugin-darwin-arm64"
         }
     },
-    "webapp": {},
     "settings_schema": {
         "header": "Configure the connection to your Ollama instance.",
         "footer": "",
@@ -28,18 +27,82 @@
             {
                 "key": "DefaultModel",
                 "display_name": "Default Model",
-                "type": "text",
+                "type": "dropdown",
-                "help_text": "Model name to use when none is specified.",
+                "help_text": "Model to use for chat responses.",
-                "placeholder": "llama3:latest",
+                "default": "llama3:latest",
-                "default": "llama3:latest"
+                "options": [
+                    { "display_name": "dolphin-llama3:latest (8B, uncensored)", "value": "dolphin-llama3:latest" },
+                    { "display_name": "gpt-oss:20b (21B, tools, thinking)", "value": "gpt-oss:20b" },
+                    { "display_name": "llama3:latest (8B, fast)", "value": "llama3:latest" },
+                    { "display_name": "new-adult-writer (8B, tools)", "value": "jimscard/new-adult-writer:latest" },
+                    { "display_name": "Qwen 27B (27B, vision)", "value": "hf.co/DavidAU/Qwen3.6-27B-Heretic-Uncensored-FINETUNE-NEO-CODE-Di-IMatrix-MAX-GGUF:Q4_K_M" },
+                    { "display_name": "supergemma4:26b (26B, uncensored)", "value": "hf.co/Jiunsong/supergemma4-26b-uncensored-gguf-v2:Q4_K_M" }
+                ]
             },
             {
-                "key": "SystemPrompt",
+                "key": "Persona",
-                "display_name": "System Prompt",
+                "display_name": "Bot Persona",
+                "type": "dropdown",
+                "help_text": "The bot's character. Pick a persona or set a custom one in the config file.",
+                "default": "a helpful assistant. Be concise, 2-3 sentences max, never repeat yourself.",
+                "options": [
+                    { "display_name": "D&D dungeon master", "value": "a Dungeons & Dragons dungeon master. Epic narrative, roll for initiative." },
+                    { "display_name": "Donald Trump", "value": "Donald Trump. Boastful, hyperbolic, third-person. Think: rally speech, not catchphrase list. Keep it to 2 sentences." },
+                    { "display_name": "Drunken Jeanine Pirro", "value": "a drunk Jeanine Pirro. Slur your words, repeat yourself, be loud and uncensored." },
+                    { "display_name": "French mime", "value": "a French mime. Respond with dramatic pauses and gestures described in asterisks. Minimal words." },
+                    { "display_name": "George Carlin", "value": "George Carlin. Acerbic, observational, profane comedy. Rant about the absurdity of everything. Use seven dirty words liberally. Keep it tight, one or two punchlines max." },
+                    { "display_name": "Gordon Ramsay (code review)", "value": "Gordon Ramsay but for code reviews. Aggressive chef. YELL. Brief." },
+                    { "display_name": "Grumpy sysadmin", "value": "a grumpy sysadmin who thinks every question is stupid. Be sarcastic, brief, and annoyed." },
+                    { "display_name": "Helpful assistant (concise)", "value": "a helpful assistant. Be concise, 2-3 sentences max, never repeat yourself." },
+                    { "display_name": "Infomercial host (1980s)", "value": "a 1980s TV infomercial host. Over-enthusiastic, loud, BUT WAIT THERE'S MORE." },
+                    { "display_name": "Medieval court jester", "value": "a medieval court jester who mocks everyone. Old-timey insults, brief." },
+                    { "display_name": "Motivational speaker", "value": "a motivational speaker who turns everything into a life lesson. Over-the-top positive but concise." },
+                    { "display_name": "Noir detective", "value": "a noir detective who answers every question with another question. Brooding, cryptic, short." },
+                    { "display_name": "Overly polite Canadian", "value": "an overly polite Canadian who apologises excessively. Sorry, eh, keep it short." },
+                    { "display_name": "Philosophical overthinker", "value": "a philosopher who overcomplicates everything. Pseudo-intellectual, wordy is the point." },
+                    { "display_name": "Pirate captain", "value": "a pirate captain. Use pirate slang, be theatrical, keep responses short." },
+                    { "display_name": "Shakespearean author", "value": "a Shakespearean author. Respond in eloquent old English, but keep it brief." },
+                    { "display_name": "Surfer dude", "value": "a surfer dude explaining complex topics badly. Chill, inaccurate, gnarly." },
+                    { "display_name": "Tech support scammer (2008)", "value": "a tech support scammer from 2008. Alarmist, pushy, uses ALL CAPS occasionally." },
+                    { "display_name": "Tired parent", "value": "a tired parent who's given up on life. Exhausted, relatable, monosyllabic when possible." }
+                ]
+            },
+            {
+                "key": "RepeatPenalty",
+                "display_name": "Repeat Penalty",
+                "type": "number",
+                "help_text": "Penalises repeated words. 10 = none, 11 = mild, 12 = strong. Helps with repetitive output. (Internally divided by 10.)",
+                "default": 11
+            },
+            {
+                "key": "FrequencyPenalty",
+                "display_name": "Frequency Penalty",
+                "type": "number",
+                "help_text": "Penalises frequently used tokens. 0 = none, 1 = mild, 5 = strong. Reduces word/phrase repetition. (Internally divided by 10.)",
+                "default": 1
+            },
+            {
+                "key": "Brevity",
+                "display_name": "Max Sentences",
+                "type": "dropdown",
+                "default": "3",
+                "help_text": "Maximum sentences per response. Suffixed to the persona automatically.",
+                "options": [
+                    { "display_name": "1 sentence", "value": "1" },
+                    { "display_name": "2 sentences", "value": "2" },
+                    { "display_name": "3 sentences", "value": "3" },
+                    { "display_name": "5 sentences", "value": "5" },
+                    { "display_name": "10 sentences", "value": "10" },
+                    { "display_name": "Unlimited", "value": "0" }
+                ]
+            },
+            {
+                "key": "CustomPersona",
+                "display_name": "Custom Persona (overrides dropdown)",
                 "type": "text",
-                "help_text": "System prompt prepended to every conversation.",
+                "help_text": "Type a custom persona here to override the dropdown. Leave empty to use the dropdown selection. E.g. \"a sarcastic AI that quotes Monty Python\".",
-                "placeholder": "You are a helpful assistant.",
+                "placeholder": "",
-                "default": "You are a helpful assistant."
+                "default": ""
             },
             {
                 "key": "MaxTokens",
@@ -53,7 +116,7 @@
                 "display_name": "Rate Limit (requests/minute/user)",
                 "type": "number",
                 "help_text": "Maximum requests per minute per user. 0 = unlimited.",
-                "default": 10
+                "default": 0
             },
             {
                 "key": "AllowedUserIDs",

server/command.go

@@ -8,26 +8,36 @@ import (
     "github.com/mattermost/mattermost/server/public/plugin"
 )
 
-const helpText = `### Mattermore -- AI Chat Agent
+const helpText = `### Matty -- AI Chat Agent
 
 **@mention the bot in any channel to start a conversation.**
 
 **Commands:**
 
-- @mattermore <prompt> -- Chat with the default model
+- @matty <prompt> -- Chat with the default model
-- @mattermore model <name> <prompt> -- Use a specific model
+- @matty model <name> <prompt> -- Use a specific model
-- @mattermore new -- Reset conversation context
+- @matty new -- Reset conversation context
-- @mattermore model list -- List available models
+- @matty model list -- List available models
-- @mattermore help -- Show this help
+- @matty help -- Show this help
-- @mattermore stop -- End the current conversation
+- @matty stop -- End the current conversation
 
-You can also use /ai <prompt> as an alternative.
+You can also use /ai <prompt> as an alternative. /resetmatty clears memory.
 
 The bot responds only when addressed and disengages naturally.
 `
 
-// ExecuteCommand handles the /ai slash command.
+// ExecuteCommand handles slash commands (/ai, /resetmatterless).
 func (p *Plugin) ExecuteCommand(_ *plugin.Context, args *model.CommandArgs) (*model.CommandResponse, *model.AppError) {
+    // /resetmatty — clear context and end session.
+    if args.Command == "/resetmatty" {
+        if err := p.conversationStore.Reset(args.UserId, args.ChannelId); err != nil {
+            return p.response("Failed to reset conversation."), nil
+        }
+        p.engagementEngine.Sleep(args.UserId, args.ChannelId)
+        return p.response("Matty's memory wiped. @matty to start again."), nil
+    }
+
+    // /ai — dispatch subcommands.
     trigger := strings.TrimSpace(strings.TrimPrefix(strings.TrimSpace(args.Command), "/ai"))
     parts := parseArgs(trigger)
 
@@ -39,7 +49,8 @@ func (p *Plugin) ExecuteCommand(_ *plugin.Context, args *model.CommandArgs) (*mo
         if err := p.conversationStore.Reset(args.UserId, args.ChannelId); err != nil {
             return p.response("Failed to reset conversation."), nil
         }
-        return p.response("Conversation reset. Start fresh with @mattermore <prompt>"), nil
+        p.engagementEngine.Sleep(args.UserId, args.ChannelId)
+        return p.response("Conversation reset. @matty to start again."), nil
 
     case parts[0] == "model" && len(parts) >= 2 && parts[1] == "list":
         return p.handleModelList(args)

server/configuration.go

@@ -10,7 +10,11 @@ import (
 type configuration struct {
     OllamaURL          string
     DefaultModel       string
-    SystemPrompt       string
+    Persona            string
+    CustomPersona      string
+    Brevity            string
+    RepeatPenalty      float64
+    FrequencyPenalty   float64
     MaxTokens          int
     RateLimitPerMinute int
     AllowedUserIDs     string

server/engagement.go

@@ -0,0 +1,83 @@
+package main
+
+import (
+    "sync"
+    "time"
+)
+
+// EngagementState tracks whether a user is in an active conversation.
+type EngagementState int
+
+const (
+    Sleeping   EngagementState = 0
+    Active     EngagementState = 1
+)
+
+// engagementSession tracks a single user's active conversation.
+type engagementSession struct {
+    userID     string
+    channelID  string
+    state      EngagementState
+    lastActive time.Time
+}
+
+// EngagementEngine manages active conversations per user+channel.
+// When a user @mentions the bot, they enter an Active session.
+// Their subsequent non-@mention messages in the same channel
+// are treated as continuations until a stop word or timeout.
+type EngagementEngine struct {
+    mu       sync.Mutex
+    sessions map[string]*engagementSession
+    timeout  time.Duration
+}
+
+// NewEngagementEngine creates a new engine with the given inactivity timeout.
+func NewEngagementEngine() *EngagementEngine {
+    return &EngagementEngine{
+        sessions: make(map[string]*engagementSession),
+        timeout:  5 * time.Minute,
+    }
+}
+
+// sessionKey builds a unique key per user+channel.
+func (e *EngagementEngine) sessionKey(userID, channelID string) string {
+    return userID + ":" + channelID
+}
+
+// Wake marks a user+channel as actively engaged with the bot.
+func (e *EngagementEngine) Wake(userID, channelID string) {
+    e.mu.Lock()
+    defer e.mu.Unlock()
+    key := e.sessionKey(userID, channelID)
+    e.sessions[key] = &engagementSession{
+        userID:     userID,
+        channelID:  channelID,
+        state:      Active,
+        lastActive: time.Now(),
+    }
+}
+
+// IsActive returns true if the user+channel is in an active conversation.
+func (e *EngagementEngine) IsActive(userID, channelID string) bool {
+    e.mu.Lock()
+    defer e.mu.Unlock()
+    key := e.sessionKey(userID, channelID)
+    s, exists := e.sessions[key]
+    if !exists {
+        return false
+    }
+    if time.Since(s.lastActive) > e.timeout {
+        delete(e.sessions, key)
+        return false
+    }
+    s.lastActive = time.Now()
+    return true
+}
+
+// Sleep ends the active conversation for a user+channel.
+func (e *EngagementEngine) Sleep(userID, channelID string) {
+    e.mu.Lock()
+    defer e.mu.Unlock()
+    key := e.sessionKey(userID, channelID)
+    delete(e.sessions, key)
+}

server/hooks.go

@@ -3,14 +3,13 @@ package main
 import (
     "fmt"
     "strings"
-    "time"
 
     "github.com/mattermost/mattermost/server/public/model"
     "github.com/mattermost/mattermost/server/public/plugin"
 )
 
-const botUsername = "mattermore"
+const botUsername = "matty"
-const botDisplayName = "Mattermore AI"
+const botDisplayName = "Matty AI"
 const botDescription = "AI chat agent powered by Ollama."
 
 // OnActivate is invoked when the plugin is activated.
@@ -18,8 +17,8 @@ func (p *Plugin) OnActivate() error {
     // Register the /ai slash command.
     if err := p.API.RegisterCommand(&model.Command{
         Trigger:          "ai",
-        DisplayName:      "Mattermore",
+        DisplayName:      "Matty",
-        Description:      "AI chat agent powered by Ollama.",
+        Description:      "AI chat powered by Ollama. @matty",
         AutoComplete:     true,
         AutoCompleteDesc: "Chat with the AI. Usage: /ai <prompt>",
         AutoCompleteHint: "<prompt>",
@@ -27,17 +26,24 @@ func (p *Plugin) OnActivate() error {
         return fmt.Errorf("register command: %w", err)
     }
 
-    // Ensure the bot account exists.
+    // Register the /resetmatty command.
-    bot := &model.Bot{
+    if err := p.API.RegisterCommand(&model.Command{
-        Username:    botUsername,
+        Trigger:          "resetmatty",
-        DisplayName: botDisplayName,
+        DisplayName:      "Reset Matty",
-        Description: botDescription,
+        Description:      "Clear conversation context and end active session.",
+        AutoComplete:     true,
+        AutoCompleteDesc: "Clear Matty's memory for this channel.",
+        AutoCompleteHint: "",
+    }); err != nil {
+        return fmt.Errorf("register reset command: %w", err)
     }
-    createdBot, appErr := p.API.CreateBot(bot)
+
-    if appErr != nil {
+    // Ensure the bot account exists — create or re-use.
-        return fmt.Errorf("create bot: %w", appErr)
+    var err error
+    p.botUserID, err = p.ensureBot()
+    if err != nil {
+        return fmt.Errorf("bot setup: %w", err)
     }
-    p.botUserID = createdBot.UserId
 
     // Initialise components.
     cfg := p.getConfiguration()
@@ -52,10 +58,44 @@ func (p *Plugin) OnActivate() error {
     p.ollamaClient = NewOllamaClient(cfg.OllamaURL)
     p.conversationStore = NewConversationStore(p.API)
     p.rateLimiter = NewRateLimiter(cfg.RateLimitPerMinute)
+    p.engagementEngine = NewEngagementEngine()
 
     return nil
 }
 
+// ensureBot finds or creates the bot account and returns its user ID.
+func (p *Plugin) ensureBot() (string, error) {
+    // Check if a user with the bot username already exists.
+    user, appErr := p.API.GetUserByUsername(botUsername)
+    if appErr == nil && user != nil {
+        // User exists — check if it's a bot.
+        if _, botErr := p.API.GetBot(user.Id, true); botErr == nil {
+            return user.Id, nil
+        }
+        // User exists but is not a bot — create the bot association.
+        createdBot, createErr := p.API.CreateBot(&model.Bot{
+            Username:    botUsername,
+            DisplayName: botDisplayName,
+            Description: botDescription,
+        })
+        if createErr != nil {
+            return "", fmt.Errorf("account exists but bot creation failed: %w", createErr)
+        }
+        return createdBot.UserId, nil
+    }
+
+    // No existing user — create bot fresh.
+    createdBot, appErr := p.API.CreateBot(&model.Bot{
+        Username:    botUsername,
+        DisplayName: botDisplayName,
+        Description: botDescription,
+    })
+    if appErr != nil {
+        return "", fmt.Errorf("create bot: %w", appErr)
+    }
+    return createdBot.UserId, nil
+}
+
 // OnDeactivate is invoked when the plugin is deactivated.
 func (p *Plugin) OnDeactivate() error {
     // The bot account persists across restarts — it will be re-used
@@ -86,14 +126,7 @@ func (p *Plugin) MessageHasBeenPosted(c *plugin.Context, post *model.Post) {
         return
     }
 
-    // Check if this is a thread reply to a post we made.
+    cfg := p.getConfiguration()
-    threadOwned := false
-    if post.RootId != "" {
-        rootPost, appErr := p.API.GetPost(post.RootId)
-        if appErr == nil && rootPost.UserId == p.botUserID {
-            threadOwned = true
-        }
-    }
 
     // Check if the bot is @-mentioned in the message.
     mentioned := strings.Contains(
@@ -101,12 +134,14 @@ func (p *Plugin) MessageHasBeenPosted(c *plugin.Context, post *model.Post) {
         "@"+botUsername,
     )
 
-    // If not mentioned and not a thread reply, ignore.
+    isActive := p.engagementEngine.IsActive(post.UserId, post.ChannelId)
-    if !mentioned && !threadOwned {
+
+    // If not mentioned and not in an active conversation, ignore.
+    if !mentioned && !isActive {
         return
     }
 
-    // Build the prompt by stripping the @-mention.
+    // Build the prompt.
     prompt := post.Message
     if mentioned {
         prompt = strings.TrimSpace(strings.Replace(
@@ -118,9 +153,9 @@ func (p *Plugin) MessageHasBeenPosted(c *plugin.Context, post *model.Post) {
     }
 
     // Handle stop words before sending to Ollama.
-    cfg := p.getConfiguration()
     if stopWordMatch(prompt, cfg.stopWordSet()) {
-        p.postReply(post, "Goodbye! Feel free to @mention me again anytime.")
+        p.engagementEngine.Sleep(post.UserId, post.ChannelId)
+        p.postReply(post, "Goodbye! _Matty_ signing off. :wave:")
         return
     }
 
@@ -136,6 +171,11 @@ func (p *Plugin) MessageHasBeenPosted(c *plugin.Context, post *model.Post) {
         return
     }
 
+    // Wake or refresh the engagement session.
+    if mentioned {
+        p.engagementEngine.Wake(post.UserId, post.ChannelId)
+    }
+
     // Build conversation context.
     messages, err := p.conversationStore.BuildMessages(post.UserId, post.ChannelId, prompt)
     if err != nil {
@@ -143,86 +183,69 @@ func (p *Plugin) MessageHasBeenPosted(c *plugin.Context, post *model.Post) {
         return
     }
 
-    // Create the initial thread post with a placeholder.
+    // Prepend the persona system prompt to set the bot's character.
-    replyPost := &model.Post{
+    persona := cfg.CustomPersona
-        UserId:    p.botUserID,
+    if persona == "" {
-        ChannelId: post.ChannelId,
+        persona = cfg.Persona
-        Message:   "…",
-        RootId:    post.RootId,
     }
-    if replyPost.RootId == "" {
+    if persona != "" {
-        replyPost.RootId = post.Id
+        systemContent := "You are " + persona + ". Respond in character. Only respond to the latest message — do not re-address earlier messages. Vary your openings and phrasing each time."
+        // Append brevity instruction if set.
+        if cfg.Brevity != "" && cfg.Brevity != "0" {
+            systemContent += " Reply in " + cfg.Brevity + " sentences or fewer."
+        }
+        systemMsg := ChatMessage{
+            Role:    "system",
+            Content: systemContent,
+        }
+        messages = append([]ChatMessage{systemMsg}, messages...)
     }
 
-    createdPost, appErr := p.API.CreatePost(replyPost)
+    p.API.LogDebug("Chat request", "model", cfg.DefaultModel, "persona", persona, "brevity", cfg.Brevity)
-    if appErr != nil {
-        p.API.LogError("Failed to create reply post", "error", appErr.Error())
-        return
-    }
 
-    // Stream the response from Ollama.
+    // Stream the full response from Ollama, then post once.
+    opts := map[string]any{}
+    if cfg.MaxTokens > 0 {
+        opts["num_predict"] = cfg.MaxTokens
+    }
+    if cfg.RepeatPenalty > 0 {
+        opts["repeat_penalty"] = float64(cfg.RepeatPenalty) / 10.0
+    }
+    if cfg.FrequencyPenalty > 0 {
+        opts["frequency_penalty"] = float64(cfg.FrequencyPenalty) / 10.0
+    }
     stream, err := p.ollamaClient.ChatCompletionStream(&ChatRequest{
         Model:    cfg.DefaultModel,
         Messages: messages,
-        Options:  map[string]any{},
+        Options:  opts,
     })
     if err != nil {
-        p.postReply(post, fmt.Sprintf("Failed to get response from Ollama: %v", err))
+        p.postReply(post, "Matty is asleep. @matty when you need me.")
         return
     }
 
-    // Read the stream and update the post periodically.
+    var fullResponse strings.Builder
-    var accumulated strings.Builder
+    for event := range stream {
-    updateTicker := time.NewTicker(200 * time.Millisecond)
-    defer updateTicker.Stop()
-
-    for {
-        select {
-        case event, ok := <-stream:
-            if !ok {
-                // Stream closed unexpectedly.
-                p.finalisePost(createdPost, accumulated.String())
-                return
-            }
         if event.Error != nil {
             p.API.LogError("Stream error", "error", event.Error.Error())
-                p.finalisePost(createdPost, accumulated.String()+"\n\n*Error: response truncated*")
+            fullResponse.WriteString("\n\n(Matty is asleep. @matty when you need me.)")
-                return
+            break
         }
-            accumulated.WriteString(event.Token)
+        fullResponse.WriteString(event.Token)
         if event.Done {
-                p.finalisePost(createdPost, accumulated.String())
+            break
-                return
-            }
-        case <-updateTicker.C:
-            if accumulated.Len() > 0 {
-                createdPost.Message = accumulated.String()
-                p.API.UpdatePost(createdPost)
-            }
         }
     }
+
+    p.postReply(post, fullResponse.String())
 }
 
-// finalisePost updates the post with the final content and persists the session.
+// postReply creates a direct channel post.
-func (p *Plugin) finalisePost(post *model.Post, content string) {
-    post.Message = content
-    if _, appErr := p.API.UpdatePost(post); appErr != nil {
-        p.API.LogError("Failed to finalise post", "error", appErr.Error())
-    }
-}
-
-// postReply creates a reply post in the same thread as the given post.
 func (p *Plugin) postReply(replyTo *model.Post, text string) {
     replyPost := &model.Post{
         UserId:    p.botUserID,
         ChannelId: replyTo.ChannelId,
         Message:   text,
-        RootId:    replyTo.RootId,
-    }
-
-    // If the original post has no root, use the original post ID as root.
-    if replyPost.RootId == "" {
-        replyPost.RootId = replyTo.Id
     }
 
     if _, appErr := p.API.CreatePost(replyPost); appErr != nil {

server/plugin.go

@@ -17,6 +17,7 @@ type Plugin struct {
     ollamaClient      *OllamaClient
     conversationStore *ConversationStore
     rateLimiter       *RateLimiter
+    engagementEngine  *EngagementEngine
 }
 
 // ServeHTTP allows the plugin to handle HTTP requests.

server/rate.go

@@ -19,8 +19,8 @@ type bucket struct {
 
 // NewRateLimiter creates a rate limiter with the given rate (requests/minute).
 func NewRateLimiter(ratePerMinute int) *RateLimiter {
-    if ratePerMinute <= 0 {
+    if ratePerMinute < 0 {
-        ratePerMinute = 10
+        ratePerMinute = 0
     }
     return &RateLimiter{
         users: make(map[string]*bucket),
@@ -30,6 +30,10 @@ func NewRateLimiter(ratePerMinute int) *RateLimiter {
 
 // Allow checks if a request from the given user ID should be allowed.
 func (rl *RateLimiter) Allow(userID string) bool {
+    // 0 = unlimited.
+    if rl.rate == 0 {
+        return true
+    }
     rl.mu.Lock()
     defer rl.mu.Unlock()
 

server/store.go

@@ -110,7 +110,7 @@ func (s *ConversationStore) saveSession(session *conversationSession) error {
     return err
 }
 
-// stopWordMatch checks if the trimmed, lowercased prompt matches a stop word.
+// stopWordMatch checks if the trimmed, lowercased prompt matches a stop word exactly.
 func stopWordMatch(prompt string, stopWords map[string]bool) bool {
     if stopWords == nil {
         return false