feat: initial text-summarize v0.1.0 (text.summarize@0.1.0)

Ollama-backed summarisation module — fourth real F∆I capability,
following text.extract / llm.chat / text.translate. Completes
the text-processing trio for compose-grade workflows
(extract -> translate -> summarise, or any subset).

Capability:
  Inputs:
    text       : text   (source text)
    style      : text   (e.g. "one paragraph", "three bullets";
                          defaults to "one paragraph")
    language   : text   (output language hint; empty = source)
    endpoint   : text   (Ollama /api/chat URL)
    model      : text
    api_key    : text   (optional)

  Outputs:
    summary        : text
    style          : text   (echo for audit)
    language       : text   (echo for audit)
    model_endpoint : text
    model_name     : text
    model_digest   : text   (Ollama /api/show probe; empty for
                              non-Ollama or transient failures)

  Permissions: net to localhost / 127.0.0.1 / api.openai.com /
               api.anthropic.com.

System prompt is conservative: faithful, neutral, preserves
named entities, no editorialising, no metadata. Reuses the LLM
client + digest-probe pattern from llm-chat / text-translate;
the duplication is acceptable at four modules and will be
factored into a shared crate when a fifth lands.

15 host-side tests cover prompt-building (style + language +
empty-language), Ollama-shaped response parsing, URL transform,
digest extraction, end-to-end success / probe-failure / non-
Ollama paths.

Wasm artifact: 118 KB. Built with v1.0 fai:platform imports.
Bootstrapped via 'fai new module text.summarize'.

Signed-off-by: flemming-it <sf@flemming.it>

module.yaml

@@ -0,0 +1,48 @@
+schema_version: 1
+name: text-summarize
+version: 0.1.0
+
+# Capability provided by this module.
+provides:
+  - capability: text.summarize
+    version: 0.1.0
+
+# Inputs the invoke function accepts.
+inputs:
+  # Source text to summarise.
+  text: text
+  # Style / shape of the summary, e.g. "one paragraph",
+  # "three bullet points", "a tweet". Defaults to
+  # "one paragraph" when omitted.
+  style: text
+  # Optional output language hint, e.g. "German", "ja-JP".
+  # Empty = same language as the source.
+  language: text
+  # Ollama-shaped /api/chat endpoint.
+  endpoint: text
+  # Model identifier (e.g. "qwen2.5:14b").
+  model: text
+  # Optional bearer token for cloud-hosted endpoints.
+  api_key: text
+
+# Outputs produced.
+outputs:
+  # The summary text.
+  summary: text
+  # Echo of the style input for downstream audit.
+  style: text
+  # Echo of the language input.
+  language: text
+  # Endpoint the summary was generated against.
+  model_endpoint: text
+  # Model identifier as supplied to the LLM API.
+  model_name: text
+  # SHA-256 digest of the served Ollama model (when reachable).
+  model_digest: text
+
+# Permissions required.
+permissions:
+  - "net: localhost"
+  - "net: 127.0.0.1"
+  - "net: api.openai.com"
+  - "net: api.anthropic.com"