feat: add --version flag via rootCmd.Version

GoReleaser injects version via ldflags -X main.version={{.Version}};
it is now forwarded to Cobra so `aimemo --version` works correctly.

Also fix .gitignore: anchor /aimemo to root so cmd/aimemo/ dir is not ignored.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

Author: Panda

.gitignore

@@ -1,5 +1,5 @@
 # Build output
-aimemo
+/aimemo
 dist/
 
 # Local test db

ISSUES.md

@@ -4,6 +4,12 @@ Found during local verification on 2026-02-18.
 
 ## CLI UX
 
+### [UX-3] `aimemo --version` 未实现
+- `--version` flag 不存在，报 "unknown flag"
+- 建议：在 root.go 加 `rootCmd.Version = version`（GoReleaser 已注入 `main.version` ldflags）
+
+
+
 ### [UX-1] `add` uses positional args, not flags
 - Current: `aimemo add <name> <type> [observations...] --tag`
 - Risk: users may try `--type` flag (natural expectation from other CLIs)
@@ -19,12 +25,12 @@ Found during local verification on 2026-02-18.
 
 ## CLI Bugs
 
-### [BUG-1] `import` 不接受位置参数，只接受 `--from-jsonl` flag
+### [BUG-1] ~~`import` 不接受位置参数，只接受 `--from-jsonl` flag~~ FIXED
 - `aimemo import /tmp/backup.json` → Error: --from-jsonl is required
 - `add` 是位置参数风格，`import` 是 flag 风格，不一致
 - 建议：同时支持位置参数（`import <file>`）和 flag（`--from-jsonl <file>`）
 
-### [BUG-2] `get` 对 soft-deleted entity 报 "entity not found" 而非提示可恢复
+### [BUG-2] ~~`get` 对 soft-deleted entity 报 "entity not found" 而非提示可恢复~~ FIXED
 - soft-delete 后 `aimemo get <name>` 报 "not found"，没提示该实体已软删除可恢复
 - 建议：检测到已删除实体时提示 "entity is soft-deleted; use forget --permanent to hard delete or re-add to restore"
 

cmd/aimemo/main.go

@@ -0,0 +1,11 @@
+package main
+
+import (
+	"github.com/pandaXD/aimemo/internal/cli"
+)
+
+var version = "dev"
+
+func main() {
+	cli.Execute(version)
+}

internal/cli/root.go

@@ -29,7 +29,8 @@ Run 'aimemo serve' to start the MCP server (usually done automatically by your A
 }
 
 // Execute runs the root command.
-func Execute() {
+func Execute(version string) {
+	rootCmd.Version = version
 	if err := rootCmd.Execute(); err != nil {
 		os.Exit(1)
 	}