feat: parse all Go CLIs with flaggy; dump bash complete. (#36)

stdlib flag dropped --hop after the query. One wrapper in internal/cli,
source <(./bin/cli/complete.go bash). Gitea #34.

docs/design.md

@@ -38,6 +38,10 @@ bin/brain/search.go "question"
 from each hit (1=File, 2=Commit, 3=Person). Rebuild writes FROM_FILE;
 git import writes HAS_VERSION/AUTHORED ([#17](https://git.produktor.io/eSlider/2dph/issues/17)).
 
+Go CLIs parse with **flaggy** via `internal/cli` (D23). Flags may appear
+after positionals (`search q --hop 1`). Completions:
+`source <(./bin/cli/complete.go bash)`.
+
 ## Who / What / How / Where / When + evidence
 
 Every assertion edge carries:

docs/roadmap.md

@@ -40,6 +40,7 @@ Epic [#16](https://git.produktor.io/eSlider/2dph/issues/16) closed.
 [#30](https://git.produktor.io/eSlider/2dph/issues/30) OQ3 duckdb-go — **in**.
 [#29](https://git.produktor.io/eSlider/2dph/issues/29) OQ1 contradiction
 resolution — **in** (`temporal_freshness`, `authority_pairing`).
+[#34](https://git.produktor.io/eSlider/2dph/issues/34) D23 flaggy CLI — **in**.
 
 ## Blockers
 

docs/runbook.md

@@ -53,6 +53,7 @@ bin/brain/add.go --text "arc-1 runs Matrix" --root facts --source "compose.yml x
 bin/brain/index.go --rebuild --with-facts --with-chats
 bin/brain/search.go "LadybugDB vector index"     # facts → info → web (D17)
 bin/brain/search.go "upstream flag" --no-web
+source <(./bin/cli/complete.go bash)            # D23 flaggy complete
 bin/brain/get.go <id> --body
 bin/brain/stats.go
 ```