Add mode support (#333)

* Add mode support

* update "as any" with proper "as unknwon as ModeName" casting

* Add documentation to README and registry.ts

* Add  tests for differen event types, integration flows, and error conditions

* Clean up some tests

* Minor test fix

* Minor formatting test + switch from interface to type

* correct the order of mkdir call

* always configureGitAuth as there's already a fallback to handle null users by using the bot ID

* simplify registry setup

---------

Co-authored-by: km-anthropic <km-anthropic@users.noreply.github.com>

test/trigger-validation.test.ts

@@ -28,6 +28,7 @@ describe("checkContainsTrigger", () => {
         eventName: "issues",
         eventAction: "opened",
         inputs: {
+          mode: "tag",
           triggerPhrase: "/claude",
           assigneeTrigger: "",
           labelTrigger: "",
@@ -60,6 +61,7 @@ describe("checkContainsTrigger", () => {
           },
         } as IssuesEvent,
         inputs: {
+          mode: "tag",
           triggerPhrase: "/claude",
           assigneeTrigger: "",
           labelTrigger: "",
@@ -276,6 +278,7 @@ describe("checkContainsTrigger", () => {
           },
         } as PullRequestEvent,
         inputs: {
+          mode: "tag",
           triggerPhrase: "@claude",
           assigneeTrigger: "",
           labelTrigger: "",
@@ -309,6 +312,7 @@ describe("checkContainsTrigger", () => {
           },
         } as PullRequestEvent,
         inputs: {
+          mode: "tag",
           triggerPhrase: "@claude",
           assigneeTrigger: "",
           labelTrigger: "",
@@ -342,6 +346,7 @@ describe("checkContainsTrigger", () => {
           },
         } as PullRequestEvent,
         inputs: {
+          mode: "tag",
           triggerPhrase: "@claude",
           assigneeTrigger: "",
           labelTrigger: "",