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feature: Remove initContainer and Replace it with Kagenti Sidecar Containers#4

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feature: Remove initContainer and Replace it with Kagenti Sidecar Containers#4
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remove-init-container

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@cwiklik cwiklik commented Oct 15, 2025

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This PR removes code which injects initContainer from MCPServer Custom Resource in favor of injecting Kagenti sidecars.

The two Kagenti sidecars are:

  1. spiffy-helper
  2. client-registration

Signed-off-by: Jarek Cwiklik <cwiklik@mac.lan>
@cwiklik
cwiklik merged commit 8ba8cc3 into main Oct 15, 2025
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huang195 added a commit to huang195/kagenti-extensions that referenced this pull request May 7, 2026
Must-fix:
- rossoctl#1+rossoctl#7: Plugins spawned credential watchers with initCtx (60s), so a
  slow client-registration orphaned the plugin after Start's deadline
  and OnRequest returned 503 for the pod's lifetime. Watchers now run
  on process-lifetime contexts created in Init via context.Background()
  + context.WithCancel; the cancel func is stored on the plugin and
  fired in Shutdown. Both JWTValidation and TokenExchange now
  implement pipeline.Shutdowner. Removed the orphaned
  context.WithCancel at main.go:89 that looked like it was meant to
  be that context.

- rossoctl#2: testutil.go moved out of the plugins package into a dedicated
  sub-package authlib/plugins/plugintesting/ so it can't be imported
  by the production binary. Rewrote the helpers as stub plugin
  adapters that mimic jwt-validation / token-exchange OnRequest but
  don't touch plugin internals — listener tests inject an
  *auth.Auth via plugintesting.NewJWTValidation / NewTokenExchange,
  wire through plugintesting.BuildPipeline, and never see the real
  Configure path. All four listener tests updated.

- rossoctl#11: Removed identity sub-validation that applyDefaults made
  unreachable; class-of-error compensated by logging a boot-time
  WARN when Configure's best-effort ReadCredentialFile fails (see
  also rossoctl#12).

Suggestions:
- rossoctl#3: pollCredentials no longer mutates p.cfg. Reads credential
  values into locals and feeds them through auth.UpdateIdentity. cfg
  is now immutable after Configure returns. Added a
  buildClientAuthFrom helper that takes explicit args so the
  goroutine doesn't read p.cfg either.

- rossoctl#4: Rewrote the NoTokenPolicy doc comment to state the current
  behavior ("deny in all modes; operators who need allow or
  client-credentials must set it explicitly") instead of referring
  to the removed config.NoTokenPolicyForMode.

- rossoctl#5: Deleted unused DefaultInboundPlugins/DefaultOutboundPlugins
  and the whole defaults.go file. Fixed the stale PipelineConfig
  docstring in config.go that said "defaults kick in when
  pipeline section is omitted" — they don't.

- rossoctl#6: PluginEntry.UnmarshalYAML normalizes explicit `config: null`
  (and any other !!null-tagged scalar under `config:`) to a nil
  RawMessage, so Build's "plugin does not accept configuration"
  gate doesn't fire spuriously on the four bytes "null".

- rossoctl#12: Deleted unreachable validate() branches: static-mode's
  audience emptiness check, spiffe's missing-path check,
  client-secret's missing-id / missing-secret checks. applyDefaults
  fills the matching field in every case; the branches were dead
  code that obscured what the plugin actually validated.

Nits:
- rossoctl#8: Renamed TestPluginEntry_IDDefaultsToName →
  TestPluginEntry_IDOmittedStaysEmpty.

- rossoctl#9: TestBuild_ConfigForNonConfigurablePlugin now asserts the error
  text contains "does not accept configuration" — operator-facing
  contract.

- rossoctl#10: Renamed TestConfigurable_ErrorAborts →
  TestConfigurable_ErrorPropagates and noted in the comment that
  Build-level abort coverage lives in plugins_test.go.

- rossoctl#13: Documented on jwtValidationConfig.AudienceFile that empty-
  string is treated as "unset" and triggers the default. Operators
  who want no file backing must supply an explicit Audience.

- rossoctl#14: Added TestAuthbridgeCombinedYAML_Loads — parses the in-repo
  authbridge-combined.yaml with env vars set, asserts both inbound
  and outbound pipelines Build cleanly. A future rename of any
  default constant that the YAML relies on breaks this test in CI
  rather than silently shipping a broken image.

Assisted-By: Claude (Anthropic AI) <noreply@anthropic.com>
Signed-off-by: Hai Huang <huang195@gmail.com>
huang195 added a commit to huang195/kagenti-extensions that referenced this pull request May 7, 2026
Should-fix items from the comprehensive PR evaluation.

rossoctl#3 — WARN on NoTokenPolicy implicit default:
The pre-migration default for no_token_policy was mode-dependent
(envoy-sidecar=client-credentials, waypoint=allow, proxy-sidecar=deny).
The migration hardcodes "deny" for all modes. Waypoint operators whose
YAML doesn't explicitly set no_token_policy would silently start
denying outbound requests that previously allowed.

token-exchange.Configure now tracks whether NoTokenPolicy arrived
explicitly, and emits a WARN at boot when the default was used AND
default_policy is "exchange" (the configuration shape where the
behavior change is visible). The WARN names the three valid values
so operators can pin the behavior by adding one line to their YAML.

rossoctl#4 — /stats stub visibility:
The stat server returns empty counters because plugin-level stats
aggregation is a follow-up. Without any signal, operators curling
/stats see zeros and assume the service is broken. main.go now logs
a WARN at the same point where it constructs the stub Stats object,
explaining that /stats is a stub in this release but /config remains
accurate.

rossoctl#5 — Heartbeat during credential-file wait:
WaitForCredentialFile emitted one WARN at Configure time when a file
wasn't readable, then went silent. If the file never appeared
(typo'd path, missing volume mount), operators chased 503s instead
of seeing the wait in logs.

It now emits a WARN every 60s (overridable via the package-scope
heartbeatInterval, used from the test) while still waiting, carrying
the path and total wait duration. Loud enough to notice during an
operational incident, quiet enough to not drown out real signal. The
test asserts the heartbeat branch of the select is reachable without
panics.

rossoctl#7 — Stale CLAUDE.md credential-wait description:
The authbridge/CLAUDE.md gotcha bullet said "Authbridge waits up to
60s for [credential files]" — stale since the switch to indefinite
background polling. Rewrote to match the new behavior and point at
the heartbeat WARN as the diagnostic signal.

rossoctl#8 — Reorder token-exchange Configure to avoid partial cfg mutation:
Under the old ordering, p.cfg = c ran before clientAuth / router
construction. If either failed, p.cfg was already set even though
Configure returned an error. Since Configure errors take the process
down today, this didn't manifest, but it was sloppy state management
and a foot-gun for any future call path that Configure from
non-startup contexts.

Rewrote Configure to build clientAuth, router, and authCfg against
the local `c` before any assignment to p.* fields. buildClientAuth
and buildRouter methods removed; replaced with the pure
buildClientAuthFrom and new buildRouterFrom functions that take
explicit args. pollCredentials already used buildClientAuthFrom, so
the migration is additive.

Assisted-By: Claude (Anthropic AI) <noreply@anthropic.com>
Signed-off-by: Hai Huang <huang195@gmail.com>
huang195 added a commit to huang195/kagenti-extensions that referenced this pull request May 7, 2026
rossoctl#1 atomic.Pointer for bgCancel:
Both JWTValidation and TokenExchange now hold bgCancel in an
atomic.Pointer[context.CancelFunc] rather than a plain field. Today's
callers (pipeline.Start / pipeline.Stop) are serialized so there's no
actual race, but a future caller invoking Shutdown from a different
goroutine would have been latent-racing the Init assignment. Shutdown
uses Swap(nil) so it's also idempotent.

-race passes clean on pipeline, plugins, config packages.

rossoctl#2 Widen NoTokenPolicy WARN:
Previously only fired when default_policy was "exchange". That missed
envoy-sidecar deployers relying on the old client-credentials default
for routed hosts. WARN now fires whenever no_token_policy was
defaulted, with the message listing all three pre-PR mode-specific
defaults so operators can see which one their deployment used to get.

rossoctl#3 audience_file WARN mentions defaulted origin:
When audience_file was defaulted to /shared/client-id.txt (Kagenti
convention) and the file isn't readable, the new WARN spells that
out — so non-Kagenti deployers notice their config didn't put the
plugin where it thinks it is. Explicit-path case keeps the shorter
original message.

rossoctl#4 Drop client_id from credential-loaded log:
OAuth spec treats client_id as non-secret, but some operators treat
it as sensitive. The signal (credentials loaded) doesn't need the
identifier.

rossoctl#5 TODO markers for /stats and Ready():
Grep-able TODO(follow-up) comments at the stub sites in main.go with
sketch notes for the future work. These sit next to the existing
behavior comments so anyone reading those surfaces finds the
follow-up plan.

rossoctl#6 Pipeline.Start failure unwind:
On Init error at plugin N, Start now calls Shutdown on plugins
[0..N-1] in reverse order before returning the error. Prevents leaking
goroutines spawned by earlier plugins' Init when a downstream peer
rejects its config at boot. Not a correctness bug for production
(log.Fatalf then exit, kernel cleans up) but matters for any embedded
or multi-tenant caller.

New test TestPipelineStart_UnwindsSuccessfulInitsOnFailure asserts
the reverse-order Shutdown on the subset that Init'd, and that plugins
after the failing one are neither Init'd nor Shutdown'd.

rossoctl#8 Document strictness asymmetry in CONVENTIONS.md:
Plugin config is strict (DisallowUnknownFields); top-level runtime
YAML is forgiving (unknown keys silently dropped). Note explains the
forward-compat rationale and points at config.Validate's
empty-pipeline guard as the mechanism that closes the obvious
stale-schema gap.

rossoctl#7 is procedural (kind smoke test) — not in code.

Assisted-By: Claude (Anthropic AI) <noreply@anthropic.com>
Signed-off-by: Hai Huang <huang195@gmail.com>
huang195 added a commit to huang195/kagenti-extensions that referenced this pull request May 7, 2026
Must-fix:
- rossoctl#1+rossoctl#7: Plugins spawned credential watchers with initCtx (60s), so a
  slow client-registration orphaned the plugin after Start's deadline
  and OnRequest returned 503 for the pod's lifetime. Watchers now run
  on process-lifetime contexts created in Init via context.Background()
  + context.WithCancel; the cancel func is stored on the plugin and
  fired in Shutdown. Both JWTValidation and TokenExchange now
  implement pipeline.Shutdowner. Removed the orphaned
  context.WithCancel at main.go:89 that looked like it was meant to
  be that context.

- rossoctl#2: testutil.go moved out of the plugins package into a dedicated
  sub-package authlib/plugins/plugintesting/ so it can't be imported
  by the production binary. Rewrote the helpers as stub plugin
  adapters that mimic jwt-validation / token-exchange OnRequest but
  don't touch plugin internals — listener tests inject an
  *auth.Auth via plugintesting.NewJWTValidation / NewTokenExchange,
  wire through plugintesting.BuildPipeline, and never see the real
  Configure path. All four listener tests updated.

- rossoctl#11: Removed identity sub-validation that applyDefaults made
  unreachable; class-of-error compensated by logging a boot-time
  WARN when Configure's best-effort ReadCredentialFile fails (see
  also rossoctl#12).

Suggestions:
- rossoctl#3: pollCredentials no longer mutates p.cfg. Reads credential
  values into locals and feeds them through auth.UpdateIdentity. cfg
  is now immutable after Configure returns. Added a
  buildClientAuthFrom helper that takes explicit args so the
  goroutine doesn't read p.cfg either.

- rossoctl#4: Rewrote the NoTokenPolicy doc comment to state the current
  behavior ("deny in all modes; operators who need allow or
  client-credentials must set it explicitly") instead of referring
  to the removed config.NoTokenPolicyForMode.

- rossoctl#5: Deleted unused DefaultInboundPlugins/DefaultOutboundPlugins
  and the whole defaults.go file. Fixed the stale PipelineConfig
  docstring in config.go that said "defaults kick in when
  pipeline section is omitted" — they don't.

- rossoctl#6: PluginEntry.UnmarshalYAML normalizes explicit `config: null`
  (and any other !!null-tagged scalar under `config:`) to a nil
  RawMessage, so Build's "plugin does not accept configuration"
  gate doesn't fire spuriously on the four bytes "null".

- rossoctl#12: Deleted unreachable validate() branches: static-mode's
  audience emptiness check, spiffe's missing-path check,
  client-secret's missing-id / missing-secret checks. applyDefaults
  fills the matching field in every case; the branches were dead
  code that obscured what the plugin actually validated.

Nits:
- rossoctl#8: Renamed TestPluginEntry_IDDefaultsToName →
  TestPluginEntry_IDOmittedStaysEmpty.

- rossoctl#9: TestBuild_ConfigForNonConfigurablePlugin now asserts the error
  text contains "does not accept configuration" — operator-facing
  contract.

- rossoctl#10: Renamed TestConfigurable_ErrorAborts →
  TestConfigurable_ErrorPropagates and noted in the comment that
  Build-level abort coverage lives in plugins_test.go.

- rossoctl#13: Documented on jwtValidationConfig.AudienceFile that empty-
  string is treated as "unset" and triggers the default. Operators
  who want no file backing must supply an explicit Audience.

- rossoctl#14: Added TestAuthbridgeCombinedYAML_Loads — parses the in-repo
  authbridge-combined.yaml with env vars set, asserts both inbound
  and outbound pipelines Build cleanly. A future rename of any
  default constant that the YAML relies on breaks this test in CI
  rather than silently shipping a broken image.

Assisted-By: Claude (Anthropic AI) <noreply@anthropic.com>
Signed-off-by: Hai Huang <huang195@gmail.com>
huang195 added a commit to huang195/kagenti-extensions that referenced this pull request May 7, 2026
Should-fix items from the comprehensive PR evaluation.

rossoctl#3 — WARN on NoTokenPolicy implicit default:
The pre-migration default for no_token_policy was mode-dependent
(envoy-sidecar=client-credentials, waypoint=allow, proxy-sidecar=deny).
The migration hardcodes "deny" for all modes. Waypoint operators whose
YAML doesn't explicitly set no_token_policy would silently start
denying outbound requests that previously allowed.

token-exchange.Configure now tracks whether NoTokenPolicy arrived
explicitly, and emits a WARN at boot when the default was used AND
default_policy is "exchange" (the configuration shape where the
behavior change is visible). The WARN names the three valid values
so operators can pin the behavior by adding one line to their YAML.

rossoctl#4 — /stats stub visibility:
The stat server returns empty counters because plugin-level stats
aggregation is a follow-up. Without any signal, operators curling
/stats see zeros and assume the service is broken. main.go now logs
a WARN at the same point where it constructs the stub Stats object,
explaining that /stats is a stub in this release but /config remains
accurate.

rossoctl#5 — Heartbeat during credential-file wait:
WaitForCredentialFile emitted one WARN at Configure time when a file
wasn't readable, then went silent. If the file never appeared
(typo'd path, missing volume mount), operators chased 503s instead
of seeing the wait in logs.

It now emits a WARN every 60s (overridable via the package-scope
heartbeatInterval, used from the test) while still waiting, carrying
the path and total wait duration. Loud enough to notice during an
operational incident, quiet enough to not drown out real signal. The
test asserts the heartbeat branch of the select is reachable without
panics.

rossoctl#7 — Stale CLAUDE.md credential-wait description:
The authbridge/CLAUDE.md gotcha bullet said "Authbridge waits up to
60s for [credential files]" — stale since the switch to indefinite
background polling. Rewrote to match the new behavior and point at
the heartbeat WARN as the diagnostic signal.

rossoctl#8 — Reorder token-exchange Configure to avoid partial cfg mutation:
Under the old ordering, p.cfg = c ran before clientAuth / router
construction. If either failed, p.cfg was already set even though
Configure returned an error. Since Configure errors take the process
down today, this didn't manifest, but it was sloppy state management
and a foot-gun for any future call path that Configure from
non-startup contexts.

Rewrote Configure to build clientAuth, router, and authCfg against
the local `c` before any assignment to p.* fields. buildClientAuth
and buildRouter methods removed; replaced with the pure
buildClientAuthFrom and new buildRouterFrom functions that take
explicit args. pollCredentials already used buildClientAuthFrom, so
the migration is additive.

Assisted-By: Claude (Anthropic AI) <noreply@anthropic.com>
Signed-off-by: Hai Huang <huang195@gmail.com>
huang195 added a commit to huang195/kagenti-extensions that referenced this pull request May 7, 2026
rossoctl#1 atomic.Pointer for bgCancel:
Both JWTValidation and TokenExchange now hold bgCancel in an
atomic.Pointer[context.CancelFunc] rather than a plain field. Today's
callers (pipeline.Start / pipeline.Stop) are serialized so there's no
actual race, but a future caller invoking Shutdown from a different
goroutine would have been latent-racing the Init assignment. Shutdown
uses Swap(nil) so it's also idempotent.

-race passes clean on pipeline, plugins, config packages.

rossoctl#2 Widen NoTokenPolicy WARN:
Previously only fired when default_policy was "exchange". That missed
envoy-sidecar deployers relying on the old client-credentials default
for routed hosts. WARN now fires whenever no_token_policy was
defaulted, with the message listing all three pre-PR mode-specific
defaults so operators can see which one their deployment used to get.

rossoctl#3 audience_file WARN mentions defaulted origin:
When audience_file was defaulted to /shared/client-id.txt (Kagenti
convention) and the file isn't readable, the new WARN spells that
out — so non-Kagenti deployers notice their config didn't put the
plugin where it thinks it is. Explicit-path case keeps the shorter
original message.

rossoctl#4 Drop client_id from credential-loaded log:
OAuth spec treats client_id as non-secret, but some operators treat
it as sensitive. The signal (credentials loaded) doesn't need the
identifier.

rossoctl#5 TODO markers for /stats and Ready():
Grep-able TODO(follow-up) comments at the stub sites in main.go with
sketch notes for the future work. These sit next to the existing
behavior comments so anyone reading those surfaces finds the
follow-up plan.

rossoctl#6 Pipeline.Start failure unwind:
On Init error at plugin N, Start now calls Shutdown on plugins
[0..N-1] in reverse order before returning the error. Prevents leaking
goroutines spawned by earlier plugins' Init when a downstream peer
rejects its config at boot. Not a correctness bug for production
(log.Fatalf then exit, kernel cleans up) but matters for any embedded
or multi-tenant caller.

New test TestPipelineStart_UnwindsSuccessfulInitsOnFailure asserts
the reverse-order Shutdown on the subset that Init'd, and that plugins
after the failing one are neither Init'd nor Shutdown'd.

rossoctl#8 Document strictness asymmetry in CONVENTIONS.md:
Plugin config is strict (DisallowUnknownFields); top-level runtime
YAML is forgiving (unknown keys silently dropped). Note explains the
forward-compat rationale and points at config.Validate's
empty-pipeline guard as the mechanism that closes the obvious
stale-schema gap.

rossoctl#7 is procedural (kind smoke test) — not in code.

Assisted-By: Claude (Anthropic AI) <noreply@anthropic.com>
Signed-off-by: Hai Huang <huang195@gmail.com>
huang195 added a commit to huang195/kagenti-extensions that referenced this pull request May 12, 2026
…mics

Addresses five review comments from PR rossoctl#401, four code changes plus
one comment-only tweak:

rossoctl#1 — Framework-stamped rejecting plugin (robustness).
OutcomeFromContext previously inferred the denying plugin from
pctx.Extensions.Invocations, making correctness dependent on plugin
authors pairing Action{Type: Reject} with a pctx.Record call. A
plugin that returned Reject without recording was misclassified as
OutcomeAllow or OutcomeError.

Pipeline.Run / RunResponse now stamp pctx.rejectingPlugin on every
enforce-policy Reject. OutcomeFromContext reads that first; the
Invocation walk stays as defense-in-depth for bespoke dispatchers.
Shadow rejections (on_error: observe) do not stamp the field —
matches "the pipeline effectively allowed" semantics already used by
abctl. Exposed via pctx.RejectingPlugin() getter for listeners that
build Outcome explicitly.

rossoctl#2 — context.WithoutCancel in dispatchFinish (ergonomics).
OnFinish previously ran under context.Background()-derived ctx,
discarding any values (slog fields, request ID, tracing span) the
caller carried. Now uses context.WithoutCancel(parent) as the base:
preserves values while still detaching cancellation so client
disconnect doesn't abort cleanup I/O. The caller-supplied ctx is
wired through RunFinish; its parameter is no longer vestigial.

rossoctl#3 — Drop ext_authz StatusCode=200 sentinel (cleanup).
OutcomeFromContext classifies pctx.StatusCode == 0 as OutcomeError,
which is correct for HTTP listeners where 0 means "no response
written." ext_authz has no HTTP status concept, so it was setting
StatusCode=200 as a sentinel to coerce the helper into returning
OutcomeAllow. With rossoctl#1 landed, ext_authz now calls a local
authzOutcome(pctx) helper that reads pctx.RejectingPlugin() directly
and defaults to OutcomeAllow — no sentinel, intent is explicit.

rossoctl#4 — RunFinish double-call guard (defense-in-depth).
A pctx.finished flag, set at RunFinish entry, causes a second call
to log a WARN and early-return rather than double-release every
Finisher's per-request state. All current listeners call RunFinish
exactly once; this is purely protection against a refactor accident
(two defers registered) or dispatch bug.

rossoctl#5 — Reword ext_authz LIFO comment (readability).
Moved the LIFO note to the outbound defer's block; the inbound
defer now just says "fires whether the pipeline allows, denies, or
Check returns early." The prior wording made the inbound defer's
comment easy to misread as "inbound runs first."

New tests:
  TestRunFinish_DoubleCallGuard        second call is no-op
  TestRunFinish_CtxValuePropagation    values carry through detach
  TestRun_StampsRejectingPlugin        allow/enforce-deny/shadow-deny
  TestOutcomeFromContext_PrefersRejectingPlugin  plugins that
                                       return Reject without
                                       recording are still Deny

Full authlib + cmd/authbridge test suites pass under -race.

Assisted-By: Claude (Anthropic AI) <noreply@anthropic.com>
Signed-off-by: Hai Huang <huang195@gmail.com>
huang195 added a commit to huang195/kagenti-extensions that referenced this pull request May 29, 2026
Three suggestions worth addressing:

1. Eager Catalog() at boot. New plugins.WarmCatalog() helper is
   called in each binary's main() right before sessionapi.New, so any
   factory that violates the constructor contract (panics, allocates
   goroutines/connections/file handles) fails fast at startup rather
   than silently caching a faulty throwaway instance on the first
   /v1/plugins request. Cheap insurance — the result is already
   memoized so this just moves "first call" out of the request hot
   path.

2. Stale-catalog hint on the editor's "Unknown plugin" validation
   error. abctl caches /v1/plugins for the session; a freshly-
   installed plugin in-cluster won't appear until refresh. The
   message now hints at the staleness path:
       Unknown plugin "foo" (not in cached /v1/plugins; catalog may
       be stale, press P then r to refresh)
   The prompt is already non-blocking ("apply anyway? (y/N)"), so
   operators can still proceed; this just saves one round of
   confusion.

3. Document the auth-posture decision on /v1/plugins. The handler
   inherits the no-auth posture of the rest of /v1/*; the catalog
   reveals plugin metadata (names, deps, descriptions) but never
   user content or secrets, so it's fine. Doc-only addition so the
   next maintainer doesn't re-derive the conclusion.

Reviewer's rossoctl#4 was a compliment on the inboundSessionID comment
block — no action needed.

Assisted-By: Claude (Anthropic AI) <noreply@anthropic.com>
Signed-off-by: Hai Huang <huang195@gmail.com>
oblinder added a commit to s-and-p-team/kagenti-extensions that referenced this pull request Jun 29, 2026
- Add RAG Ingest → ChromaDB arrowhead in PRD.md high-level diagram
- Replace arch diagram in ARCHITECTURE-SUMMARY with PRD version (Policy Store
  Pod, Policy Compute Engn box, RAG Ingest ──► ChromaDB)
- Update component table: 7 → 8 entries; Policy Management Service →
  Policy Store (rossoctl#3); add Policy Computation Engine (rossoctl#4); update library
  module paths and descriptions throughout

Assisted-By: Claude (Anthropic AI) <noreply@anthropic.com>
Signed-off-by: Oleg Blinder <olegb@il.ibm.com>
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