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>

README.md

@@ -0,0 +1,46 @@
+# text-summarize
+
+Provides the `text.summarize` capability for F∆I Platform.
+
+## Build
+
+```bash
+cargo build --release --target wasm32-wasip2
+```
+
+## Test
+
+```bash
+cargo test                 # host-side unit + integration tests
+fai test .                 # load the wasm component in the runtime sandbox
+```
+
+## Authoring with fai-module-sdk
+
+The module body is one decorated function:
+
+```rust
+#[fai_module]
+pub fn invoke(_ctx: Context, inputs: Inputs) -> Result<Outputs, ModuleError> {
+    let message = inputs.require_text("message")?;
+    Ok(Outputs::new().with_text("reply", format!("got: {message}")))
+}
+```
+
+The macro hides the wit_bindgen call, the Guest impl, the
+Payload variant matching, and the `wit_bindgen::export!`
+invocation. See `fai-module-sdk` documentation for the full
+surface.
+
+## SDK source
+
+The Cargo.toml git-deps `fai-module-sdk` from
+`https://git.flemming.ws/fai/module-sdk.git`. If your environment requires
+authentication for that host (e.g. Forgejo with
+`REQUIRE_SIGNIN_VIEW=true`), set up `git config insteadOf` with
+your PAT, or use `cargo:net.git-fetch-with-cli=true` plus a
+credential helper.
+
+## License
+
+Apache-2.0