feat(plugin-metadata): add plugin metadata (#13539)

* docs(core-plugin-metadata): populate descriptions

---------

Co-authored-by: AJ Emerich <aj-emerich@proton.me>

core/src/main/resources/metadata/chart.yaml

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+group: io.kestra.plugin.core.chart
+name: "chart"
+title: "Chart"
+description: "Tasks that render dashboard charts from Kestra data sources."
+body: "Use these chart widgets to visualize metrics, executions, or flow trends in dashboards; pair them with dashboard data queries and configure aggregations, groupings, and chart options for Bar, Pie, Time Series, KPI, or Table outputs."
+videos: []
+createdBy: "Kestra Core Team"
+managedBy: "Kestra Core Team"

core/src/main/resources/metadata/condition.yaml

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+group: io.kestra.plugin.core.condition
+name: "condition"
+title: "Condition"
+description: "Tasks that evaluate conditions to control flow execution or triggers."
+body: "Use these predicates to gate tasks or triggers based on time windows, calendars, execution metadata, labels, namespaces, retries, or custom expressions; configure required parameters such as allowed states, namespaces, date ranges, or JEXL expressions to return a true/false result."
+videos: []
+createdBy: "Kestra Core Team"
+managedBy: "Kestra Core Team"

core/src/main/resources/metadata/data.yaml

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+group: io.kestra.plugin.core.data
+name: "data"
+title: "Data"
+description: "Tasks that fetch Kestra executions, flows, logs, metrics, and triggers as datasets for dashboards."
+body: "These data providers query Kestra repositories with filters and aggregations to feed dashboard charts; configure columns and fields (such as namespace, state, timestamp, or labels) plus any filters to shape the returned dataset for visualization."
+videos: []
+createdBy: "Kestra Core Team"
+managedBy: "Kestra Core Team"

core/src/main/resources/metadata/debug.yaml

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+group: io.kestra.plugin.core.debug
+name: "debug"
+title: "Debug"
+description: "Tasks that emit debug output while you develop a flow."
+body: "Echo and Return help inspect variables and payloads or short-circuit execution during testing; provide the message or value to output so downstream tasks can see exactly what is being passed around."
+videos: []
+createdBy: "Kestra Core Team"
+managedBy: "Kestra Core Team"

core/src/main/resources/metadata/execution.yaml

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+group: io.kestra.plugin.core.execution
+name: "execution"
+title: "Execution"
+description: "Tasks that manage the lifecycle and context of a running execution."
+body: "Use these tasks to assert expectations, set or unset variables, add labels, fail, exit, resume, or purge executions; supply required properties such as variable maps, label key/values, or retention rules before altering execution state."
+videos: []
+createdBy: "Kestra Core Team"
+managedBy: "Kestra Core Team"

core/src/main/resources/metadata/flow.yaml

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+group: io.kestra.plugin.core.flow
+name: "flow"
+title: "Flow"
+description: "Tasks that orchestrate control flow within a Kestra pipeline."
+body: "Sequence, branch, loop, parallelize, or nest subflows/templates using these primitives; define embedded task lists, values for switches, iteration collections, working directories, and loop exit criteria to structure complex workflows cleanly."
+videos: []
+createdBy: "Kestra Core Team"
+managedBy: "Kestra Core Team"

core/src/main/resources/metadata/http.yaml

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+group: io.kestra.plugin.core.http
+name: "http"
+title: "HTTP"
+description: "Tasks that interact with HTTP endpoints."
+body: "Perform requests, downloads, or webhook triggers with configurable methods, headers, authentication, and payloads; provide the target URI plus any body or query parameters, and use response handling options to store results for downstream tasks."
+videos: []
+createdBy: "Kestra Core Team"
+managedBy: "Kestra Core Team"

core/src/main/resources/metadata/index.yaml

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+group: io.kestra.plugin.core
+name: "core"
+title: "Core Plugins and tasks"
+description: "Tasks that provide Kestra's built-in orchestration, I/O, and observability capabilities."
+body: "Core plugins cover control-flow, execution management, triggers, storage, HTTP, metrics, logging, templating, and dashboard widgets; combine these foundational tasks to build reliable workflows without adding external dependencies."
+videos: []
+createdBy: "Kestra Core Team"
+managedBy: "Kestra Core Team"

core/src/main/resources/metadata/kv.yaml

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+group: io.kestra.plugin.core.kv
+name: "kv"
+title: "KV"
+description: "Tasks that manage key-value pairs in Kestra's KV store."
+body: "Set, get, list, version, and delete namespaced keys to share state across flows; specify the key path, value for writes, and optional namespace or TTL to control how data is stored, retrieved, and purged."
+videos: []
+createdBy: "Kestra Core Team"
+managedBy: "Kestra Core Team"

core/src/main/resources/metadata/log.yaml

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+group: io.kestra.plugin.core.log
+name: "log"
+title: "Log"
+description: "Tasks that write, fetch, or purge Kestra logs."
+body: "Emit structured log messages, retrieve stored logs, or clean up log storage; provide message content or log query filters and consider namespace or execution scoping when purging."
+videos: []
+createdBy: "Kestra Core Team"
+managedBy: "Kestra Core Team"

core/src/main/resources/metadata/metric.yaml

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+group: io.kestra.plugin.core.metric
+name: "metric"
+title: "Metric"
+description: "Tasks that publish custom metrics from flows."
+body: "Send counters, gauges, and timing metrics to Kestra's metric store for dashboards and alerts; define the metric name, type, value, labels, and optional timestamp to record meaningful telemetry."
+videos: []
+createdBy: "Kestra Core Team"
+managedBy: "Kestra Core Team"

core/src/main/resources/metadata/namespace.yaml

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+group: io.kestra.plugin.core.namespace
+name: "namespace"
+title: "Namespace"
+description: "Tasks that manage namespace files and versions."
+body: "Upload, download, delete, purge, or version files stored in a namespace—useful for shipping assets or configs with flows; set the target namespace, paths or glob patterns, and purge behavior to control stored artifacts."
+videos: []
+createdBy: "Kestra Core Team"
+managedBy: "Kestra Core Team"

core/src/main/resources/metadata/output.yaml

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+group: io.kestra.plugin.core.output
+name: "output"
+title: "Output"
+description: "Tasks that expose outputs from a flow."
+body: "Use OutputValues to publish key-value outputs for downstream tasks or subflows; declare the output map and data types that consuming tasks should read."
+videos: []
+createdBy: "Kestra Core Team"
+managedBy: "Kestra Core Team"

core/src/main/resources/metadata/runner.yaml

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+group: io.kestra.plugin.core.runner
+name: "runner"
+title: "Runner"
+description: "Tasks that execute commands on the Kestra worker."
+body: "Run shell processes with configurable command, environment, working directory, and input/output handling; ensure commands are idempotent and set expected exit codes or resource needs when invoking external binaries."
+videos: []
+createdBy: "Kestra Core Team"
+managedBy: "Kestra Core Team"

core/src/main/resources/metadata/storage.yaml

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+group: io.kestra.plugin.core.storage
+name: "storage"
+title: "Storage"
+description: "Tasks that manipulate files in Kestra's internal storage."
+body: "Write, delete, concatenate, split, deduplicate, filter, reverse, size, or list files used by executions; provide source and target storage URIs and any encoding or line-handling options to transform stored data safely."
+videos: []
+createdBy: "Kestra Core Team"
+managedBy: "Kestra Core Team"

core/src/main/resources/metadata/templating.yaml

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+group: io.kestra.plugin.core.templating
+name: "templating"
+title: "Templating"
+description: "Tasks that render dynamic task specifications from templates."
+body: "TemplatedTask lets you supply a Pebble-rendered YAML spec that is parsed and executed at runtime; provide the `spec` property with a valid runnable task definition and avoid recursive templating when composing dynamic tasks."
+videos: []
+createdBy: "Kestra Core Team"
+managedBy: "Kestra Core Team"

core/src/main/resources/metadata/trigger.yaml

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+group: io.kestra.plugin.core.trigger
+name: "trigger"
+title: "Trigger"
+description: "Tasks that start flows from schedules or events."
+body: "Define cron-based schedules, specific date triggers, webhooks, namespace flow triggers, or toggles; set required properties like cron expressions, webhook secrets, and target flow references to control when executions fire."
+videos: []
+createdBy: "Kestra Core Team"
+managedBy: "Kestra Core Team"