feat(pr_dash): use ❯ instead of • as slack bullet character

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: thiagowfx

pr_dash/README.md

@@ -117,8 +117,8 @@ Formats PRs as Slack mrkdwn with emoji indicators and linked titles, ready to pa
 
 ```
 *tulip/terraform*
-• :large_green_circle: :eyes: <https://github.com/tulip/terraform/pull/726|#726 docs(adr): add ADR-0010 for garden-base migration plan> · 3h · jgdef-tulip, DomZach
-• :red_circle: :eyes: <https://github.com/tulip/terraform/pull/700|#700 DO NOT SUBMIT: feat(azure-global-identity)> · 3d · TechOps, aranair
+❯ :large_green_circle: :eyes: <https://github.com/tulip/terraform/pull/726|#726 docs(adr): add ADR-0010 for garden-base migration plan> · 3h · jgdef-tulip, DomZach
+❯ :red_circle: :eyes: <https://github.com/tulip/terraform/pull/700|#700 DO NOT SUBMIT: feat(azure-global-identity)> · 3d · TechOps, aranair
 
 _2 open PR(s)._
 ```

pr_dash/pr_dash.sh

@@ -597,7 +597,7 @@ render_slack() {
         (.[] |
             (.ci | ci_emoji) as $ci_e |
             ((.reviewDecision // "") | review_emoji) as $rv_e |
-            "\u2022 " + $ci_e +
+            "\u276f " + $ci_e +
             (if $rv_e != "" then " " + $rv_e else "" end) +
             " " +
             (if .isDraft then "[draft] " else "" end) +