feat(chart)!: remove Helm-rendered config path, require configToml or configUrl (#1277)

BREAKING CHANGE: agents without configToml or configUrl now fail at
template time with a clear error linking to docs/migrate-to-configtoml.md.

- configmap.yaml: replace ~350-line TOML serializer with {{- fail}} (357 → 25 lines)
- Chart.yaml: bump to 0.10.0 (breaking change in 0.x series)
- NOTES.txt: remove unreachable deprecation block (fail fires before NOTES render)
- docs/migrate-to-configtoml.md: update header to reflect v0.10.0 removal
- tests: remove 9 suites for deleted rendering logic, update configtoml + config-url tests
- Preserve: README --set-file section, ADR doc, values.yaml comments (from #1276)

Co-authored-by: chaodu-agent <chaodu-agent@users.noreply.github.com>

Author: antigenius0910

charts/openab/Chart.yaml

@@ -2,5 +2,5 @@ apiVersion: v2
 name: openab
 description: A lightweight, secure, cloud-native ACP harness that bridges Discord and any ACP-compatible coding CLI.
 type: application
-version: 0.9.0-beta.6
-appVersion: "0.9.0-beta.6"
+version: 0.10.0
+appVersion: "0.10.0"

charts/openab/templates/NOTES.txt

@@ -72,24 +72,3 @@ Agents deployed:
     Any env var passed via [agent].env is accessible to the agent and could be exfiltrated via prompt injection.
     All supported backends use OAuth/file-based auth — avoid passing API keys via env vars when possible.
 
-{{- $legacyAgents := list }}
-{{- range $name, $cfg := .Values.agents }}
-{{- if ne (include "openab.agentEnabled" $cfg) "false" }}
-{{- if and (not $cfg.configToml) (not $cfg.configUrl) }}
-{{- $legacyAgents = append $legacyAgents $name }}
-{{- end }}
-{{- end }}
-{{- end }}
-{{- if $legacyAgents }}
-
-⚠️  DEPRECATION NOTICE:
-    The following agents use Helm-rendered config (slack.*, discord.*, pool.*, etc.):
-{{- range $legacyAgents }}
-      • {{ . }}
-{{- end }}
-    This rendering path is deprecated and will be removed in a future release.
-    Track the removal timeline: https://github.com/openabdev/openab/issues/1278
-    Migrate to configToml (or configUrl for a platform-agnostic setup) to write
-    config.toml directly instead of relying on Helm's rendering.
-    See: https://github.com/openabdev/openab/blob/main/docs/migrate-to-configtoml.md
-{{- end }}

charts/openab/templates/configmap.yaml

@@ -11,8 +11,12 @@ tests:
       - hasDocuments:
           count: 0
 
-  - it: renders ConfigMap when configUrl is not set
+  - it: renders ConfigMap when configUrl is not set (configToml provided)
     template: templates/configmap.yaml
+    set:
+      agents.kiro.configToml: |
+        [agent]
+        command = "kiro-cli"
     asserts:
       - hasDocuments:
           count: 1
@@ -28,6 +32,10 @@ tests:
 
   - it: does not set args when configUrl is empty
     template: templates/deployment.yaml
+    set:
+      agents.kiro.configToml: |
+        [agent]
+        command = "kiro-cli"
     asserts:
       - isNull:
           path: spec.template.spec.containers[0].args

charts/openab/tests/adapter-enablement_test.yaml

@@ -49,8 +49,7 @@ tests:
       - hasDocuments:
           count: 0
 
-  - it: falls back to Helm rendering when configToml is absent
+  - it: fails with a clear error when neither configToml nor configUrl is set
     asserts:
-      - matchRegex:
-          path: data["config.toml"]
-          pattern: '\[agent\]'
+      - failedTemplate:
+          errorPattern: "was removed in chart v0.10.0"