Migrate to chezmoi with per-host sway/waybar configs

- Restructure repo into chezmoi source layout (dot_ prefix)
- Add .chezmoi.toml.tmpl mapping hostname to hosttype (laptop/desktop)
- Template sway config.d fragments (outputs/inputs/binds) per host
- Template waybar config.jsonc with shared bar/module definitions
- Host-scope pulsemeeter (flow) and teams-for-linux (desktop hosts) via .chezmoiignore
- Trim install.sh package lists to configured software + config deps
- Remove stale kitty.conf.bak and untracked host fragments

dot_config/opencode/opencode.json

@@ -0,0 +1,40 @@
+{
+    "$schema": "https://opencode.ai/config.json",
+    "agent": {
+        "build": {
+            "model": "opencode-go/deepseek-v4-flash",
+            "temperature": 1.0,
+            "top_p": 0.95,
+            "permission": {
+                "skill": {
+                    "git-*": "allow"
+                }
+            }
+        },
+        "plan": {
+            "model": "kimi-for-coding/k3"
+        }
+    },
+    "mcp": {
+        "gitea-mcp": {
+            "enabled": true,
+            "type": "local",
+            "command": [
+                "gitea-mcp",
+                "-t",
+                "stdio",
+                "-H",
+                "https://gitea.itspm.cc",
+                "-T",
+                "82e8aeb9bcf9b26d1bad9167549f6532f968bcb0"
+            ]
+        },
+        "codebase-memory-mcp": {
+            "enabled": true,
+            "type": "local",
+            "command": [
+                "/home/pmcc/.local/bin/codebase-memory-mcp"
+            ]
+        }
+    }
+}